Plain Bearing Pulley Block Single Swivel - Size 6 - 64mmThe Size 6 Barton blocks are designed as our high-load cruiser block range and are of rugged construction. It features high-grade injection moulded side plates, with all load-carrying components from 316 grade stainless steel. Side plates are through-bolted and riveted for added strength and security. This good-looking and versatile range is designed for use on larger cruising and racing yachts. All are designed for ease of use with our ball bearing mainsheet traveller system.Designed around a 64mm (2-1/2") sheave and to work with 14mm (9/16") ropes.

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Single DO 550 Rope Clutch Cruising Racing Max 12mm LineFor cruising and racing yachts, offering a holding power of up to 550 kgs. Modern, high-performance materials. Manufactured from modern lightweight materials, the DO 550 moulded parts are made from high-grade plastics which are strong, light, and impact resistant. Cams and bases are from marine-grade aluminium, anodised for long life in the harsh marine environment.

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Clear Step Lead Block for 1" StanchionsUnique design leads your furling control line outside of your stanchions for a clean lead aft to the cockpit. Stainless cheeks with Delrin(tm) ball bearing sheave ensure low-friction and high strength. Locks in place with a small set screw accessed through a small hole in the sheave. Specifications: Maximum line diameter 1/2" For 1" Stanchions Overall Width 3-1/8" (79mm) Thickness 1-1/8" (29mm) Safe Working load 750 lbs (350kg) Weight 5oz (142g) 

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Series 7 Flat Base/Aluminum Cheek/Delrin SheaveDelrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes loads to a large surface area. Specifications: Sheave Dia. 2-3/8" (60 mm) Max. Line 1/2" (13 mm) Length 4-3/8" (111 mm) Width  2-3/4" (70 mm) Height 1" (25 mm) Fasteners (4) 1/4" RH (6 mm) C/C 3-5/8" (92 mm) C/C (wide end) 2" (51mm) C/C (narrow end) 1-9/16" SWL 2250 lbs. (1020 kg) Weight Alum. 9.6 oz. (272 g) 

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Single Stainless Steel Block - 51mm SheaveSingle block with stainless steel cheeks. Delrin™ sheave ensures smooth operation and high safe working load. Specifications:Sheave Dia. 2" (51mm)Thickness 15/16" (24mm)Width 2 1/8" (54mm)Length 4 13/32" (112mm)SWL 1750 lbs. (795kg)Weight 7.1oz (201g)Max Line 7/16" (11mm) 

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Series 5 Flat Base/Alum Cheek/Delrin SheaveDelrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes loads to a large surface area. Specifications: Sheave Diameter 2" (51 mm) Max. Line 7/16" (11 mm) Length 3-5/8" (92 mm) Width 2-7/32" (57 mm) Height 7/8" (22 mm) Fasteners (4) #10 RH (5 mm) C/C 3" (76 mm) SWL 1750 lbs. (795 kg) Weight 5.9 oz. (167g) Max. Line 7/16" (11mm)

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57mm Carbo Air Fiddle Block with Swivel & BecketLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.Specifications: Sheave: 57mm / 2-1/4in Length: 175mm / 6-7/8in Weight: 113g / 4oz Shackle pin: 5mm / 3/16in Maximum line: 10mm / 3/8in Maximum working load: 359kg / 792lb Breaking load: 1080kg / 2380lb

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80mm Single Element Block Mastbase with SwivelElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks.Sideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life. Specifications: Sheave: 80mm (3-1/8") Max Line: 16mm (5/8") Max Working Load: 2200kg (4850lbs)

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40mm Carbo Block with Spring & EyestrapLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in Maximum line Ø (mm): 10 mm Maximum line Ø (in): 3/8 in Maximum working load (kg): 220 kg Maximum working load (lb): 485 lb

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38mm Single Big Bullet BlockLow-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. Features: Sheave: 38mm (1-1/2") Maximum Line: 10mm (3/8") Maximum Working Load: 136kg (300lb)

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40mm Carbo Air Fiddle Block with SwivelLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, these small, compact blocks have very high working loads for safe, easy trimming. The 40 mm fiddle is an excellent choice for 3:1 and 4:1 tackles on dinghy vangs and mainsheets, as well as for controls such as cunninghams and internal boom outhauls on larger boats.Specifications: Sheave: 40mm / 1-9/16in Length: 115mm / 4-1/2in Weight: 51g / 1.8oz Shackle pin: 4mm / 5/32in Maximum line: 10mm / 3/8in Maximum working load: 220kg / 485lb Breaking load: 735kg / 1620lb

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22mm Micro BlockLow-friction Micro blocks are compact and lightweight. Specifications: Sheave: 22mm / 7/8in Length: 38mm / 1-1/2in Weight: 14g / 0.5oz Maximum line: 6mm / 1/4in Maximum working load: 91kg / 200lb Breaking load: 544kg / 1200lb

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16mm Forkhead BlockThe 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) maximum working load.Specifications: Sheave: 16mm / 5/8in. Length: 29mm / 1-1/8in. Weight: 11g / .38oz Maximum line: 5mm / 7/32in Maximum working load: 113kg/ 250lb Breaking load: 544kg / 1200lb

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Series 30 Ball Bearing Orbit Block™ - CheekBall Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.Features: Lightweight Highest working load in its class Secure, versatile and secure attachement Low profile and compact Applications: Mainsheet systems and spinnaker sheets on dinghies to 5M(16') Halyard, vang and backstay applications on boats to 5M(16') Control line applications on larger yachts Materials: Sheave: High compression strength carbon black Acetal Ball Bearings: High compression strength Acetal Frame/Cheeks: Toughened, glass fiber reinforced Nylon Link: UV stabilized, multi-strand impregnated SK75 Dyneema® Specifications:Sheave Ø: 30mm(1-3/16")Max. Rope Ø: 8mm(5/16")M.W.L.: 300kg(660lbs)B. L.: 600kg(1,320lbs)Weight: 21g(0.7oz) Quick Guide (pdf)

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Size 3 45mm Plain Bearing Pulley Block Stanchion Lead BlockThe size 3 Barton plain bearing blocks have 45mm (1 3/4" sheave size 3 block range incorporates modern design with stainless steel frames and the latest advanced materials, using 30% fibre glass filled nylon and Acetal sheaves to maximise their strength whilst keeping weight to a minimum. Suitable for use as mainsheet, vangs, lead blocks, or wherever a powerful and compact purchase system is required on dinghies, dayboats, and lightweight cruisers.Suitable for up to 10mm (3/8") rope.

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Series 40 AP Sheave - Acetal Solid Bearing - 40mm(1-9/16")ODPrecision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction.Acetal Sheaves: Choice of bearings Solid bearing - high strength and durability, utilizing the self-lubricating properties of Acetal U.V. resistant Acetal sheaves

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Kite Block - Black w/White SheaveFeatures: Lightweight durable construction Economical Maintenance free Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters etc on larger yachts Materials: U.V. stabilized Acetal sheaves Nylon cheeks Specifications:Sheave Ø:16mm(5/8")Max. Rope Ø:4mm(5/32") Brochure (pdf)

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60mm Single Aluminum Element Block with SwivelElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks.Sideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life.Features: Sheave Ø (mm): 60 mm Sheave Ø (in): 2-3/8 in Maximum line Ø (mm): 14 mm Maximum line Ø (in): 9/16 in Maximum working load (kg): 1100 kg Maximum working load (lb): 2425 lb

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45mm Single Element Block with SwivelElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks.Sideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life.Specifications: Sheave: 45mm / 1-3/4in Length: 102mm / 4in Weight: 103g / 3.6oz Shackle pin: 6mm / 1/4in Maximum line: 12mm / 1/2in Maximum working load: 700kg / 1543lb Breaking load: 1400kg / 3086lb

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50mm Synchro Block - SingleLewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling.  Using a combination of scientifically optimized block geometry, a Free-Spin bearing, and a self-aligning head to reduce friction and increase efficiency by up to 40%, over budget blocks on mainsheet systems. Each component is perfectly synchronized with the movement of the rope, providing you with an easier, smoother transfer of power from deck to sail and less wear on your rope.Features: Stainless steel strap for improved strength and longer service life Stiff glass fiber reinforced cheeks to prevent lines from wedging Innovative design with “tool-free” sliding swivel locking mechanism Technical Specifications: Working Load Limit - 990lb Weight - 2.36oz Maximum Line Size - .39" (10mm) *Sold as an Individual

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Series 20 Ball Bearing Block - Single - Cheek Rivet MountFeatures: Low friction High static and dynamic load capacity Lightweight Suitable for screw or pop rivet mounting Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction Applications: Dinghy control lines Dinghy Vangs Cunninghams Traveller controls Materials: U.V. Stabilized Acetal sheaves Stainless steel ball bearings Grade 316 stainless steel load strap and head fitting Impact and UV resistant, fiber reinforced Nylon cheeks Specifications:Sheave Ø: 20mm(3/4")Max. Rope Ø: 6mm(1/4")M.W.L.: 200kg(440lbs)B. L.: 550kg(1,210lbs)Weight: 17g(0.6oz)

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Series 30 Ball Bearing Block - Single - Loop TopFeatures: Low friction 2-stage ball bearing system provides consistent performance over the full working load range High static and dynamic load capacity Light weight Versatile head fittings Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction Can be fitted with a shackle in either of two planes to allow correct alignment of the block Applications: Primary lead blocks on dinghies and catamarans Control lines on larger yachts Materials: U.V. stabilized Acetal sheaves Acetal ball bearings Impact modified, fiber reinforced and U.V. stabilized Nylon cheeks Grade 316 stainless steel load straps and head fittings Specifications:Sheave Ø: 30mm(1-3/16")Max. Rope Ø: 8mm(5/16")M.W.L.: 300kg(660lbs)B. L.: 750kg(1,650lbs)Weight: 28g(1.0oz)

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Series 15 Ball Bearing Utility Block - Single Block, Loop HeadFeatures: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O-ring to separate running line from head lashing or fixing Applications: Dinghy control lines Vangs, cunninghams and tweakers Shock cord tensioning systems Materials: BB sheaves: UV stabilized acetal Ball bearings: Stainless steel Cheeks: Grade 316 stainless steel

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Size 3 Single Plain Bearing Block with SwivelBarton plain bearing blocks have a precision molded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.Features: Fully swiveling head with removable shackle For use on dinghies, day boats, and light cruising yachts Specifications & Dimensions: Length: (mm) 100 / (inch) 3-15/16" Weight (grams): 73 g. Single (mm) 45 x 13 / (inch) 1-3/4" x 1/2" Max Rope Diameter: (mm) 10 / (inch) 3/8" SWL: (kg) 400 / (lbs.) 881 Break Load: (kg) 800 / (lbs.) 1763 Note: break loads where break and safe working loads are stated, it is assumed that all sheaves are evenly loaded as in a purchase tackle

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Series 30 Ball Bearing Orbit Block™ - TripleBall Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.Features: Lightweight Highest working load in its class Secure, versatile and secure attachement Low profile and compact Applications: Mainsheet systems and spinnaker sheets on dinghies to 5M(16') Halyard, vang and backstay applications on boats to 5M(16') Control line applications on larger yachts Materials: Sheave: High compression strength carbon black Acetal Ball Bearings: High compression strength Acetal Frame/Cheeks: Toughened, glass fiber reinforced Nylon Link: UV stabilized, multi-strand impregnated SK75 Dyneema® Specifications:Sheave Ø: 30mm(1-3/16")Max. Rope Ø: 8mm(5/16")M.W.L.: 550kg(1,210lbs)B. L.: 1,100kg(2,430lbs)Weight: 73g(2.6oz) Quick Guide (pdf)

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Single Stainless Steel Block - 60mm SheaveDelrin™ sheave ensures low-friction and high safe working load. Swivel head may be locked in place to eliminate line twist. Specifications: Sheave Dia. 2 3/8" (60mm) Thickness 1 3/32" (28mm) Width 2 1/2" (64mm) Length 5 1/32" (128mm) SWL 2250 lbs. (1020kg) Weight 10.2oz (289g) Max. Line 1/2" (13mm) 

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Series 40 Ball Bearing Block - Single - Universal HeadSheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.Features: Low friction Acetal or Torlon® bearing system Lightweight Cheek cut-outs for easy bearing maintenance Captive Lock™ universal head Slotted pin shackle eliminates fouled lines Applications: Mainsheet Halyard Vang Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26') Materials: U.V. Stabilized Acetal sheaves Acetal ball bearings Impact and U.V. resistant, fiber reinforced Nylon cheeks Grade 316 stainless steel load strap and head fitting Specifications:Sheave Ø: 40mm(1-9/16")Max. Rope Ø: 10mm(7/16")Pin Ø: 5mm(3/16")M.W.L.: 350kg(770lbs)B. L.: 1,000kg(2,200lbs)Weight: 70g(2.5oz)

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Size 5 54mm Plain Bearing Pulley Block Double Swivel & BecketThe Size 5 Barton range of blocks has a 54mm 2 1/8" sheave. They are a rugged construction, featuring high-grade moulded side plates that are through-bolted and riveted for added strength and security. All load-carrying components and interior frame are from marine-grade 316 stainless steel, and both plain and ball bearing sheaves are available. This sleek and versatile range is engineered for use on larger cruising and racing yachts and is compatible with our ball bearing mainsheet traveller system.Suitable for up to 12mm 7/16" rope.Specifications: Weight: 312 g Dimensions: 155 × 59 × 58 mm Size: 5 (54MM) Block Type: Swivel + Becket No. of Sheaves: Double Bearing Type: Plain Sheave Size: 54mm x 17mm (2 1/8" x 5/8") Max rope diameter: 12mm (7/16") SWL: 750kg (1650lbs) Break load: 1500kg (3300lbs) Max rolling load (ball bearing blocks): 525kg (1157lbs) Quick Guide (pdf)

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Size 5 54mm Plain Bearing Pulley Block Double Block & SwivelThe Size 5 Barton range of blocks has a 54mm 2 1/8" sheave. They are a rugged construction, featuring high-grade moulded side plates that are through-bolted and riveted for added strength and security. All load-carrying components and interior frame are from marine-grade 316 stainless steel, and both plain and ball bearing sheaves are available. This sleek and versatile range is engineered for use on larger cruising and racing yachts and is compatible with our ball bearing mainsheet traveller system.Suitable for up to 12mm 7/16" rope.Specifications: Weight: 290 g Dimensions: 130 × 59 × 58 mm Size: 5 (54MM) Block Type: Swivel No. of Sheaves: Double Bearing Type: Plain Sheave Size: 54mm x 17mm (2 1/8" x 5/8") Max rope diameter: 12mm (7/16") SWL: 750kg (1650lbs) Break load: 1500kg (3300lbs) Max rolling load (ball bearing blocks): 525kg (1157lbs) Quick Guide (pdf)

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Size 3 45mm Plain Bearing Pulley Block Double Swivel & BecketThe size 3 Barton plain bearing blocks have 45mm (1 3/4" sheave size 3 block range incorporates modern design with stainless steel frames and the latest advanced materials, using 30% fibre glass-filled nylon and Acetal sheaves to maximise their strength whilst keeping weight to a minimum. Suitable for use as mainsheet, vangs, lead blocks, or wherever a powerful and compact purchase system is required on dinghies, dayboats, and lightweight cruisers.Suitable for up to 10mm (3/8") rope.Specifications: Weight: 143 g Dimensions: 118 × 46 × 47 mm Size: 3 (45MM) Block Type: Swivel + Becket No. of Sheaves: Double Bearing Type: Plain Sheave Size: 45mm x 13mm (1 3/4" x 35/64") Max rope diameter: 10mm (3/8") SWL: 400kg (881lbs) Break load: 800kg (1763lbs) Max rolling load (ball bearing blocks): 270kg (595lbs) Quick Guide (pdf)

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Size 1 30mm Plain Bearing Pulley Block Double Swivel & BecketThe Size 1 Plain Bearing Blocks have a 30mm (1 3/16") sheave. The range is designed with an internal steel frame for added strength and durability. Also available in ball bearing sheave options, the lightweight modern design is available in variations that allow for a multitude of uses on every size craft.Suitable for up to 8mm (5/16")rope.Specifications: Weight: 88g Dimensions: 93 × 40 × 32 mm Size: 1 (30MM) Block Type: Swivel + Becket No. of Sheaves: Double Bearing Type: Plain Sheave Size: 30mm x 12mm (1 3/16" x 15/32") Max rope diameter: 8mm (5/16") SWL: 355kg (782lbs) Break load: 710kg (1565lbs) Max rolling load (ball bearing blocks): 245kg (540lbs) Quick Guide (pdf)

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Size 5 54mm Plain Bearing Pulley Block Single Swivel & BecketThe Size 5 Barton range of blocks has a 54mm 2 1/8" sheave. They are a rugged construction, featuring high-grade moulded side plates that are through-bolted and riveted for added strength and security. All load-carrying components and interior frame are from marine-grade 316 stainless steel, and both plain and ball bearing sheaves are available. This sleek and versatile range is engineered for use on larger cruising and racing yachts and is compatible with our ball bearing mainsheet traveller system.Suitable for up to 12mm 7/16" rope.Specifications: Weight: 220 g Dimensions: 150 × 58 × 37 mm Size: 5 (54MM) Block Type: Swivel + Becket No. of Sheaves: Single Bearing Type: Plain Sheave Size: 54mm x 17mm (2 1/8" x 5/8") Max rope diameter: 12mm (7/16") SWL: 750kg (1650lbs) Break load: 1500kg (3300lbs) Max rolling load (ball bearing blocks): 525kg (1157lbs) Quick Guide (pdf)

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Size 2 35mm Plain Bearing Pulley Block Double Swivel & BecketThe Barton Size 2 Plain Bearing Block has a 35mm (1 3/8") sheave. This block range size provides high performance and load values in a variety of assemblies & configurations. The range has an internal stainless steel frame and precision components. Also available in ball bearing sheave options. The lightweight design makes this range perfect for a multitude of uses on every yacht.Suitable for up to 8mm (5/16") rope.Specifications: Weight: 99g Dimensions: 100 × 39 × 38 mm Size: 2 (35MM) Block Type: Fixed Eye + Becket No. of Sheaves: Double Bearing Type: Plain Sheave Size: 35mm x 11mm (1 3/8" x 15/32") Max rope diameter: 8mm (5/16") SWL: 370kg (815lbs) Break load: 740kg (1630lbs) Max rolling load (ball bearing blocks): 260kg (573lbs) Quick Guide (pdf)

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Size 2 35mm Plain Bearing Pulley Block Double with SwivelThe Barton Size 2 Plain Bearing Block has a 35mm (1 3/8") sheave. This block range size provides high performance and load values in a variety of assemblies & configurations. The range has an internal stainless steel frame and precision components. Also available in ball bearing sheave options. The lightweight design makes this range perfect for a multitude of uses on every yacht.Suitable for up to 8mm (5/16") rope.Specifications: Weight: 87g Dimensions: 83 × 39 × 38 mm Size: 2 (35MM) Block Type: Fixed Eye No. of Sheaves: Double Bearing Type: Plain Sheave Size: 35mm x 11mm (1 3/8" x 15/32") Max rope diameter: 8mm (5/16") SWL: 370kg (815lbs) Break load: 740kg (1630lbs) Max rolling load (ball bearing blocks): 260kg (573lbs) Quick Guide (pdf)

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Size 1 30mm Plain Bearing Pulley Block Single Swivel & BecketThe Size 1 Plain Bearing Blocks have a 30mm (1 3/16") sheave. The range is designed with an internal steel frame for added strength and durability. Also available in ball bearing sheave options, the lightweight modern design is available in variations that allow for a multitude of uses on every size craft.Suitable for up to 8mm (5/16") rope.Specifications: Weight: 51 g Dimensions: 85 × 32 × 25 mm Size: 1 (30MM) Block Type: Swivel + Becket No. of Sheaves: Single Bearing Type: Plain Sheave Size: 30mm x 12mm (1 3/16" x 15/32") Max rope diameter: 8mm (5/16") SWL: 355kg (782lbs) Break load: 710kg (1565lbs) Max rolling load (ball bearing blocks): 245kg (540lbs) Quick Guide (pdf)

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Size 3 45mm Plain Bearing Pulley Block Single Swivel & BecketThe size 3 Barton plain bearing blocks have 45mm (1 3/4" sheave size 3 block range incorporates modern design with stainless steel frames and the latest advanced materials, using 30% fibre glass-filled nylon and Acetal sheaves to maximise their strength whilst keeping weight to a minimum. Suitable for use as mainsheet, vangs, lead blocks, or wherever a powerful and compact purchase system is required on dinghies, dayboats, and lightweight cruisers.Suitable for up to 10mm (3/8") rope.Specifications: Weight: 91 g Dimensions: 114 × 47 × 28 mm Size: 3 (45MM) Block Type: Swivel + Becket No. of Sheaves: Single Bearing Type: Plain Sheave Size: 45mm x 13mm (1 3/4" x 35/64") Max rope diameter: 10mm (3/8") SWL: 400kg (881lbs) Break load: 800kg (1763lbs) Max rolling load (ball bearing blocks): 270kg (595lbs) Quick Guide (pdf)

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Size 2 35mm Plain Bearing Pulley Block Single Swivel & BecketThe Barton Size 2 Plain Bearing Block has a 35mm (1 3/8") sheave. This block range size provides high performance and load values in a variety of assemblies & configurations. The range has an internal stainless steel frame and precision components. Also available in ball bearing sheave options. The lightweight design makes this range perfect for a multitude of uses on every yacht.Suitable for up to 8mm (5/16") rope.Specifications: Weight: 60 g Dimensions: 93 × 38 × 24 mm Size: 2 (35MM) Block Type: Swivel + Becket No. of Sheaves: Single Bearing Type: Plain Sheave Size: 35mm x 11mm (1 3/8" x 15/32") Max rope diameter: 8mm (5/16") SWL: 370kg (815lbs) Break load: 740kg (1630lbs) Max rolling load (ball bearing blocks): 260kg (573lbs) Quick Guide (pdf)

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40mm Carbo Block 90° Fixed HeadLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in Maximum line Ø (mm): 10 mm Maximum line Ø (in): 3/8 in Maximum working load (kg): 220 kg Maximum working load (lb): 485 lb

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Series 20 Ball Bearing Block- Single, Stand-Up Loop TopFeatures: Low friction High static and dynamic load capacity Lightweight Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction.Applications: Dinghy control lines Dinghy vangs Cunninghams Traveler controls Materials: Stainless steel ball bearings UV stabilized Acetal sheave Grade 316 stainless steel load strap and head fitting Impact and UV resistant, fiber reinforced Nylon cheeks

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90mm Synchro Block - SingleLewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling.  Using a combination of scientifically optimized block geometry, a Free-Spin bearing, and a self-aligning head to reduce friction and increase efficiency by up to 40%, over budget blocks on mainsheet systems. Each component is perfectly synchronized with the movement of the rope, providing you with an easier, smoother transfer of power from deck to sail and less wear on your rope.Features: Stainless steel strap for improved strength and longer service life Stiff glass fiber reinforced cheeks to prevent lines from wedging Innovative design with “tool-free” sliding swivel locking mechanism Technical Specifications: Working Load Limit - 4400lb Weight - 14.57oz Maximum Line Size - .55" (14mm) *Sold as an Individual

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Series 3 Flat Base/Alum Cheek/Delrin SheaveDelrin™ plain bearing sheave ensures smooth operation and high safe working load. Stainless Steel base distributes loads to a larger surface area.Specifications: Sheave Dia. 1-7/16" (37 mm) Max Line 7/16" (11 m) Length 2-7/8" (73 mm) Width 1-3/4" (44 mm) Height 3/4" (19 mm) Fasteners (4) #10- RH (5 mm) C/C 2-3/8" (60 mm) SWL 1000 lbs. (450 kg) Weight Alum. 2.5 oz. (71 g) 

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Series 40 Ball Bearing Orbit Block - Single - Becket - Cleat - Swivel HeadFeatures: Ultra Lightweight Low friction 2-stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating LightweightKilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimizes the mass of the inactive return race and hub.Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible.Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.Highest Working Load In It's ClassThe orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximizes load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.The floating sheave and bearing system is supported by a fiber-reinforced load frame. The design was computer modeled to be stress optimized.Applications: Mainsheet systems on spinnaker sheet on dinghies to 5m (16ft) Spinnaker sheets on dinghies, sportsboats and small keel boats to 5m (16ft) Halyard, vang and backstay applications on boats to 8m (26ft) Control line applications on larger yachts Materials: Ball Bearings - High compression strength carbon black Acetal. Stage 2 Bearing - Glass fibre reinforced, MoS2 impregnated Nylon Frame/Cheeks - Toughened, glass fibre reinforced Nylon Sheave - Carbon fiber reinforced, PTFE impregnated Nylon

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Size 3 Stanchion Lead Block - Single with Becket & Cam Cleat Barton Marine's stanchion lead blocks have proven to be popular with Cruising sailors all over the World.  Mounted onto the stanchion base, the stanchion lead block enables the Genoa furling line to be led back to the cockpit for easy adjustment. Ball bearing sheaves have a precision molded acetal sheave running on a significant diameter brass bearing, ensuring free running under the highest loads.   The unit will fully rotate about the swivel head to match your pulling angle. Cam cleat will secure the line into place.  Block attachment to stanchion is by means of screwing together the integral Stainless Steel strap.Technical Specifications Sheave - Single Sheave Size - 1-3/4" (45mm) Maximum Rope Diameter -  3/8" (10mm) Safe Working Load - 881 lb (400 kg) Maximum Stanchion (Tube) Size - 1" (25mm)  *Sold as an Individual  Quick Guide (pdf)Brochure (pdf)

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29mm Carbo T2 BlockThe high-strength composite T2™ is the first block with no metal shackles or rivets. It is used for traveler controls, mainsheets and vangs, cascades, bridles, and other systems where small, lightweight blocks are called. The T2 can be tied, spliced, or lashed to almost anything. The length of the Spectra® line is included. Spectra® is a registered trademark of Honeywell International, Inc.Specifications: Sheave Ø (mm): 29 mm Sheave Ø (in): 1-1/8 in. Length (mm): 43 mm Length (in): 1-11/16 in. Weight (g): 12 g Weight (oz): 0.4 oz Maximum Line Ø (mm): 8 mm Maximum Line Ø (in): 5/16 in. Maximum Working Load (kg): 150 kg Maximum Working Load (lb): 330 lbs. Breaking Load (kg): 454 kg Breaking Load (lb): 1000 lbs. Owner's Manual (pdf)

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Series 25 Ball Bearing Orbit Block™ - LashingSingle sheave ball bearing block with becket and lashing head.The Series 25 Ball Bearing Orbit Blocks™ deliver superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstan’s renowned high-compression strength acetal bearing system, the Series 25 BB Orbit Blocks are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 metres.Each block has a stainless steel hub for versatile lashing attachments and through-sheave becket functionality, making them adaptable to a wide range of rigging setups. The hub accommodates up to 4mm (5/32") lashing and ensures maximum efficiency without compromising reliability.Features: 2-stage ball bearing system. Suits up to 8mm (5/16”) lines. Hollow hub for becket take-off. Lashing blocks suit up to 4mm (5/32”) lashing. Specifications: Max. Rope diameter (in): 5/16 Sheave diameter (in): 1 B.L. (lb): 1650 Weight (oz): 0.5 Applications: Mainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft).  Control lines. Cascading vangs. Leech lines & cunninghams. Materials: BB Sheave and balls: High compression strength acetal. Frame/cheeks: Toughened, glass-fiber-reinforced nylon.

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Clip for 1" StanchionThis stainless steel clip is for a 1 in. stanchion.Specifications:Weight: 0.019kg

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Series 25 Ball Bearing Orbit Block™ - Becket & Swivel ShackleSingle sheave ball bearing block with becket hub and swivel shackle head. Series 25 Ball Bearing Orbit Blocks™, delivering superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstan’s renowned high compression strength acetal bearing system, the Series 25 BB Orbit Blocks™ are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 meters.Each block has a stainless steel hub for versatile lashing attachments and through-sheave becket functionality, making them adaptable to a wide range of rigging setups. The hub accommodates up to 4mm (5/32") lashing and ensures maximum efficiency without compromising reliability.Features: 2-stage ball bearing system. Suits up to 8mm (5/16”) lines. Hollow hub for becket take-off. Lashing blocks suit up to 4mm (5/32”) lashing. Specifications: Max. Rope diameter (in): 5/16 M.W.L. (lb): 500 Sheave diameter (in): 1 B.L. (lb): 990 Weight (oz): 0.6 Applications: Mainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft). Control lines. Cascading vangs. Leech lines & cunninghams. Materials: Frame/cheeks: Toughened, glass fibre reinforced nylon.   BB Sheave and balls: high compression strength acetal.

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Series 25 Ball Bearing HHL Lashing Orbit Block™Single sheave ball bearing high load block with becket hub option and lashing head.The Series 25 Ball Bearing Orbit Blocks™ deliver superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstan’s renowned high-compression strength acetal bearing system, the Series 25 BB Orbit Blocks are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 metres.Each block has a stainless steel hub for versatile lashing attachments and through-sheave becket functionality, making them adaptable to a wide range of rigging setups. The hub accommodates up to 4mm (5/32") lashing and ensures maximum efficiency without compromising reliability.The range also includes a High Load (HHL) variant – the RF28109HL – which is equipped with a Grade 2205 stainless steel sheave and bearing race, paired with Grade 304 stainless steel ball bearings. These HHL blocks are purpose-built for high-load applications and are increasingly in demand for modern performance and foiling boats using small-diameter lines to carry significant loads.Features: 2-stage ball bearing system. Suits up to 8mm (5/16”) lines. Hollow hub for becket take-off. Lashing blocks suit up to 4mm (5/32”) lashing. Specifications: Max. Rope diameter (in): 5/16 M.W.L. (lb): 880 Sheave diameter (in): 1 B.L. (lb): 2650 Weight (oz): 1.2 Applications: Mainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft).  Control lines. Cascading vangs. Leech lines & cunninghams. Materials: Frame/cheeks: Toughened, glass fibre reinforced nylon.   HHL Sheave and bearing race: Grade 2205 stainless steel with Grade 304 stainless steel ball bearings.

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