Size 3 45mm Plain Bearing Pulley Block Double with SwivelThe size 3 Barton plain bearing blocks have a 45mm (1 3/4" sheave size 3 block range that incorporates modern design with stainless steel frames and the latest advanced materials, using 30% fiberglass filled nylon and Acetal sheaves to maximize their strength while 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. Quick Guide (pdf)

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Size 0 20mm Plain Bearing Pulley Block Double Fixed EyeThe Barton Size 0 Plain bearing block has 20mm (3/4″) sheaves and is also available in ball bearing sheaves. They are designed for high strength and performance but lightweight with the range starting at only 13gms (0.5oz).Suitable for up to 6mm (1/4″) rope Ideal for use on dinghies, day boats smaller craft or lead blocks, flag pennants, etc. on larger yachts. Quick Guide (pdf)

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Size 0 20mm Plain Bearing Pulley Block Single SwivelThe Barton Size 0 Plain bearing block has 20mm (3/4″) sheaves and is also available in ball bearing sheaves. Designed for high strength and performance but lightweight with the range starting at only 13gms (0.5oz).Suitable for up to 6mm (1/4″) rope Ideal for use on dinghies, day boats, and smaller craft or lead blocks, flag pennants, etc. on larger yachts. Quick Guide (pdf)

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Size 0 20mm Plain Bearing Pulley Block Stand Up BlockThe Barton Size 0 Plain bearing block has 20mm (3/4″) sheaves and is also available in ball bearing sheaves. They are designed for high strength and performance but lightweight with the range starting at only 13gms (0.5oz).Suitable for up to 6mm (1/4″) rope Ideal for use on dinghies, day boats, and smaller craft or lead blocks, flag pennants, etc. on larger yachts. Quick Guide (pdf)

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Size 0 20mm Plain Bearing Pulley Block Single Fixed Eye & BecketThe Barton Size 0 Plain bearing block has 20mm (3/4″) sheaves and is also available in ball bearing sheaves. Designed for high strength and performance but lightweight with the range starting at only 13gms (0.5oz).Suitable for up to 6mm (1/4″) rope Ideal for use on dinghies, day boats, and smaller craft or lead blocks, flag pennants, etc. on larger yachts. Quick Guide (pdf)

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Size 0 20mm Plain Bearing Pulley Block Single Swivel without ShackleThe Barton Size 0 Plain bearing block has 20mm (3/4″) sheaves and is also available in ball bearing sheaves. They are designed for high strength and performance but lightweight with the range starting at only 13gms (0.5oz).Suitable for up to 6mm (1/4″) rope Ideal for use on dinghies, day boats smaller craft or lead blocks, flag pennants, etc. on larger yachts. Quick Guide (pdf)

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Size 3 45mm Plain Bearing Pulley Block Single With Fixed EyeThe size 3 Barton plain bearing blocks have a 45mm (1 3/4" sheave size 3 block range that incorporates modern design with stainless steel frames and the latest advanced materials, using 30% fiberglass filled nylon and Acetal sheaves to maximize 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. Quick Guide (pdf)

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Size 0 20mm Plain Bearing Pulley Block Single Swivel & BecketThe Barton Size 0 Plain bearing block has 20mm (3/4″) sheaves and is also available in ball bearing sheaves. They are designed for high strength and performance but lightweight with the range starting at only 13gms (0.5oz).Suitable for up to 6mm (1/4″) rope Ideal for use on dinghies, day boats smaller craft or lead blocks, flag pennants, etc. on larger yachts. Quick Guide (pdf)

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Size 1 Single Swivel Block with BecketWith the unique super-low friction ball race systems, featuring acetal sheaves and delrin ball bearings, running on a large diameter center boss. This allows us to fit more load-bearing balls, which ensure extremely low friction performance, even under high loads.Specifications: Sheave size: 20mm x 8mm Max rope diameter: 5mm Safe working load: 275kg / 606lbs Breaking load: 550kg / 1210lbs Length: 39.1mm Weight: 13g

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40mm Twing BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.Features: Opening side plate - Easy to rig and remove from sheet Spring biased to open when unlatched - One-handed operation Roller at pivot base - Use 1:1 or 2:1 up-down control Carbo Air® block construction - High strength for durability and lightweight for maximum float in light air Uses: Dinghies, sport boats, and small keelboats Spinnaker sheet and guy control Code zero sheet up-down control Specifications: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in Length (mm): 89 mm Length (in): 3-1/2 in Weight (g): 86 g Weight (oz): 3 oz Maximum line Ø (mm): 12 mm Maximum line Ø (in): 3/8 in Maximum working load (kg): 275 kg Maximum working load (lb): 606 lb Breaking load (kg): 825 kg Breaking load (lb): 1818 lb Owner's Manual (pdf)

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57mm Carbo Quad Block - SwivelLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.Features: Sheave Ø (mm) 57 mm Sheave Ø (in) 2 1/4 in Maximum line Ø (mm) 10 mm Maximum line Ø (in) 3/8 in Maximum working load (kg) 1080 kg Maximum working load (lb) 2380 lb

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80mm Element Stand Up BlockStand-up blocks are an addition to our Element line. Use them for sheeting and halyard systems, running backstays, controls and other applications where you don’t want the block to hit the deck.Element 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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Midrange Double BlockMidrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load.Features:  Sheave: 76mm/3" Maximum Line: 14mm/9/16" Max Working Load: 1270kg/2800lbs

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60mm Element Stand Up BlockStand-up blocks are an addition to our Element line. Use them for sheeting and halyard systems, running backstays, controls and other applications where you don’t want the block to hit the deck.Element 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: 60mm (2-3/8") Max Line: 14mm (9/16") Max Working Load: 1100kg (2425lbs)

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45mm Double 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: 108mm / 4-1/4in Weight: 180g / 6.3oz Shackle pin: 6mm / 1/4in Maximum line: 12mm / 1/2in Maximum working load: 875kg / 1929lb Breaking load: 1750kg / 3858lb

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45mm Double Element Block with Swivel & BecketElement 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: 127mm / 5in Weight: 195g / 6.8oz Shackle pin: 6mm / 1/4in Maximum line: 12mm / 1/2in Maximum working load: 875kg / 1929lb Breaking load: 1750kg / 3858lb

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45mm Triple Element Block with Swivel & BecketElement 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: 127mm / 5in Weight: 275g / 9.6oz Shackle pin: 6mm / 1/4in Maximum line: 12mm / 1/2in Maximum working load: 1050kg / 2315lb Breaking load: 2100kg / 4630lb

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45mm Triple 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: 108mm / 4-1/4in Weight: 265g / 9.3oz Shackle pin: 6mm / 1/4in Maximum line: 12mm / 1/2in Maximum working load: 1050kg / 2315lb Breaking load: 2100kg / 4630lb

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57mm Triple Carbo Block - Swivel, Becket, Cam CleatCarbo Ratchets allow sailors to hand-hold loaded lines and offer a balance between holding power and controlled easing.Features: Sheave Ø (mm) 57 mm Sheave Ø (in) 2 1/4 in Maximum line Ø (mm) 10 mm Maximum line Ø (in) 3/8 in Maximum working load (kg) 816 kg Maximum working load (lb) 1800 lb

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Midrange Single with Aluminum Sheave BlockMidrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load.Features:  Sheave: 76mm/3" Maximum Line: 14mm/9/16" Max Working Load: 1270kg/2800lbs

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38mm Double Big Bullet Block with BecketLow-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: 272kg (600lb)

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29mm Double Bullet Block with BecketLow-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: 29mm (1-1/8") Maximum Line: 8mm (5/16") Maximum Working Load: 181kg (400lb)

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29mm Double 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: 29mm (1-1/8") Maximum Line: 8mm (5/16") Maximum Working Load: 181kg (400lb)

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40mm Pivoting Lead Block - Carbo-Cam® CleatHigh-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats for sheeting directly from the boom. Hole spacing and rivet size are the same as Classic models, making upgrades easy. Cam reverses for either up or down cleating.Can be used as becket block.Specifications: 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)91 kg Maximum working load (lb)200 lb

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22mm Triple Micro Block with BecketLow-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes.Specifications: Sheave: 22mm / 7/8in. Length: 64mm / 2.5in. Weight: 64g / 2.25oz. Maximum line: 6mm / 1/4in. Maximum working load: 227kg / 500lb Breaking load: 544kg/ 1200 lb

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Series 25 Utility Block™ - Single - Swivel Shackle HeadStainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase. Features: Lightweight durable construction Economical Maintenance free Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters, etc on larger boats Materials: U.V. stabilized acetal sheaves Grade 316 Stainless Steel cheeks Specifications:Sheave Ø: 25mm(1")Max. Rope Ø: 6mm(1/4")Pin Ø: 4mm(5/32")M.W.L.: 150kg(330lbs)B. L.: 300kg(660lbs)Weight: 20g(0.7oz)

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Stand-Up Swivel - Aluminum BlockSpecifications: Sheave Dia. 2-2/8" (60 mm) Max Line 1/2" (13 mm) Diameter includes urethane base 3-3/8" (86 mm) Height 4-25/32" (120 mm) H2 2-15/32" (63 mm) Fastener Size (4),1/4" RH (6 mm) C/C 1-11/16" (43 mm) SWL 2250 lbs (1020 kg) Weight Alum. 11.7 oz. (332 g) 

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57mm Quad Block Swivel, Center BecketLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm) 57 mm Sheave Ø (in) 2 1/4 in Maximum line Ø (mm) 10 mm Maximum line Ø (in) 7/16 in Maximum working load (kg) 1080 kg Maximum working load (lb) 2380 lb

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40mm Carbo Single Ratchet Block with Swivel & BecketCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/off switches. 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): 136 kg Maximum working load (lb): 300 lb

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57mm Carbo Single Ratchet Block with Swivel & BecketCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: Sheave Ø (mm): 57 mm Sheave Ø (in): 2-1/4 in Maximum line Ø (mm): 10 mm Maximum line Ø (in): 3/8 in Maximum working load (kg): 227 kg Maximum working load (lb): 500 lb

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40mm Carbo Air Block with Cam Cleat & 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 Ø (mm)40 mm Sheave Ø (in)1 9/16 in Maximum line Ø (mm)6 mm Maximum line Ø (in)1/4 in Maximum working load (kg)136 kg Maximum working load (lb)300 lb

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40mm Carbo Air Double Fixed Block with 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 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)440 kg Maximum working load (lb)970 lb

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60mm Double Aluminum Element Block with Swivel & BecketElement 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): 1375 kg Maximum working load (lb): 3032 lb

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22mm Fiddle Micro Block with V-Jam & BecketLow-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes.Specifications: Sheave: 22mm / 7/8in. Length: 102mm / 4in. Weight: 57g / 2oz. Shackle pin: 5mm / 3/16in. Maximum line: 6mm / 1/4in. Maximum working load: 159kg / 350lb Breaking load: 544kg/ 1200 lb

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Series 50 Ball Bearing Block - Single Loop TopSheaves 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.Features: Low friction, 2-stage ball bearing system High static and dynamic load capacity Lightweight Cheek cut-outs for easy bearing maintenance Specifications: Max. Rope diameter (in): 1/2" M.W.L. (lb): 1100lbs Sheave diameter (in): 2" B.L. (lb): 3310lbs Weight (oz): 3.4oz Materials: Acetal 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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38mm Double 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: 272kg (600lb)

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16mm Block with BecketThe 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: 38mm / 1-1/2in. Weight: 12g / .44oz Maximum line: 5mm / 7/32in Maximum working load: 113kg/ 250lb Breaking load: 544kg / 1200lb

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Series 40 Ball Bearing Block - Fiddle - Becket - CleatFeatures: 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 Snap fit removable becket pin Multi-position cleat arm Low friction, 2-stage ball bearing system High static and dynamic load capacity Lightweight Cheek cut-outs for easy bearing maintenance Sheaves 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. Quick adjusting cleat arms require no tools to adjust and fix securely in position. Becket pin is removable so line can be spliced prior to fitting and is iApplications: Mainsheet Halyard Vang Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats  up to 8m (26ft) Typically used in direct 4:1 purchase systems such as mainsheets and boom vangs On larger boats they are used for fine-tune mainsheet tackles, outhauls, cunninghams, checkstays, genoa lead pullers and traveller controls. Materials: Acetal 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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6mm Snap Close Shackle - 5 Pack Simply push the shackle together, but once it's snapped shut, it won't come undone again.Specifications: Material: Nylon Package Size: 5 included

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Series 40 All Purpose Block - Fiddle - Becket - CleatFeatures: Exceptionally high working loads Low maintenance, long service life Self-lubricating sheave Captive Lock™ universal head Slotted pin shackle eliminates fouled lines Snap fit removable becket pin Multi-position cleat arm Spare parts - RF41010 Replacement Becket Pin, RF150 Shackle All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required. Quick adjusting cleat arms require no tools to adjust and fix securely in position. Becket pin is removable so line can be spliced prior to fitting.Applications: Mainsheet Halyard Vang Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft) Ideal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems. Materials: U.V. stabilised Acetal sheaves Impact and U.V. resistant, fibre reinforced Nylon cheeks Grade 316 stainless steel bearing race Grade 316 stainless steel load strap and head fitting Impact and UV resistant, fiber reinforced Nylon cheeks

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Series 30 Utility Block- Double, Tube RivetFeatures: Lightweight durable construction Economical Maintenance free Product Information:Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance.Hollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase.Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters etc on larger yachts Materials: U.V. stabilized Acetal sheaves Grade 316 stainless steel cheeks

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Series 30 Ball Bearing Orbit Block™ - DoubleBall 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.: 450kg(990lbs)B. L.: 900kg(1,980lbs)Weight: 50g(1.7oz) Quick Guide (pdf)

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57mm Aluminum Low Load Black Magic Block with SwivelBlack Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep the line from twisting. Low-load blocks have red isolators. They use Torlon® rollers and 316 stainless steel shackles. Standard blocks have 17-4 PH stainless head posts. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C. Specifications: Sheave: 57mm/2-1/4in Length: 119mm/4-11/16in Weight: 154g/5.44oz Shackle Pin: 6mm/1/4in Maximum Line: 12mm / 7/16in Maximum Working Load: 7/16kg / 1655lbs Breaking Load: 1500kg / 3300lb

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40mm Carbo Single Ratchet Block with Swivel Becket & Cam CleatCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in Maximum line Ø (mm): 6 mm Maximum line Ø (in): 1/4 in Maximum working load (kg): 68 kg Maximum working load (lb): 150 lb

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40mm Carbo Air Double Swivel Block with 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 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)440 kg Maximum working load (lb)970 lb Quick Guide (pdf)

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16mm Triple Block with BecketThe 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.Specifications: Sheave: 16mm / 5/8in. Length: 57mm / 2-1/4in. Weight: 43g / 1.5oz Maximum line: 5mm / 7/32in Maximum working load: 318kg/ 700lb Breaking load: 544kg / 1200lb

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40mm Carbo Air Double Fixed BlockLow-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. Speciications: 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)440 kg Maximum working load (lb)970 lb

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57mm Single Carbo Ratchet Cheek BlockCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: Sheave Ø (mm): 57 mm Sheave Ø (in): 2-1/4 in Maximum line Ø (mm): 10 mm Maximum line Ø (in): 3/8 in Maximum working load (kg): 227 kg Maximum working load (lb): 500 lb

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