Blocks
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16mm Airblock triple with becketSKU: HK409The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 318 kg maximum working load, a breaking load of 544 kg and it weights just 43 gram. Learn More
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16mm cheek blockSKU: HK416The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 544 kg and it weights just 12 gram. Learn More
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16mm Airblock with swivelSKU: HK417The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 339 kg and it weights just 18 gram. Learn More
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16mm Airblock through-deckSKU: HK421The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 544 kg and it weights just 18 gram. Learn More
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16mm Airblock cheek pivotSKU: HK432The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 339 kg and it weights just 11 gram. Learn More
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16mm Airblock flip flopSKU: HK437The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 544 kg and it weights just 21 gram. Learn More
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16mm Airblock with eyestrapSKU: HK442The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 544 kg and it weights just 12 gram. Learn More
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16mm Airblock narrow ferrule head blockSKU: HK467The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 4mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 339 kg and it weights just 12 gram. Learn More
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Series 40 Ball Bearing Orbit Block Single RF45101SKU: RF45101Ultra LightWeight . Low friction 2-stage Orbital ball bearing system. Highest working load in its class. Low profile and compact. High performance cleating. Easily fitted and securely retained Dyneema® Link head Learn More
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Series 40 BB Orbit Block, Single, Becket, Swivel Head RF45110SKU: RF45110Swivel shackle head for unlimited block rotation.
Stainless steel shackle head and compatibility with sharp fixing points.
Ultra low profile integrated becket. Learn More -
Series 40 Ball Bearing Orbit Block Single, becket RF45111SKU: RF45111Ultra low profile becket
Easily fitted and securely retained Dyneema® Link head Learn More -
Series 40 BB Orbit Block, Single,Bkt,Cleat,SwivelHead RF45130SKU: RF45130Single, Becket, Cleat, Swivel Head* Learn More
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Series 40 BB Orbit Block, Cheek RF45151SKU: RF45151Base suits curved mounting surface. Low mounting points for maximum strength Learn More
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Series 40 Ball Bearing Orbit Block Double RF45201SKU: RF45201Single inner cheeks for minimum Weight & size. Easily fitted and securely retained Dyneema® Link head Learn More
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Series 40 Ball Bearing Orbit Block Fiddle RF45501SKU: RF45501Easily fitted and securely retained Dyneema® Link head
Convert to a becket version by adding a Dyneema® link Learn More -
Series 40 Ball Bearing Orbit Block Fiddle, cleat* RF45521SKU: RF45521Both Ronstan BB and RT Orbit Blocks™ feature strong, lightWeight fibre-reinforced cleat arms. They have a wide range of adjustment and calibration marks, perfect for selecting your preferred cleating angle settings. The race-proven carbon-fibre reinforced Ronstan C-Cleat give secure rope holding with low entry and exit efforts, and are fitted with fairleads for fast action from any angle. Learn More
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Series 40 RTA Orbit Block,Auto, Single, Swivel HeadSKU: RF46100Fully Automatic load sensing ratchet engagement. Swivel shackle head for unlimited block rotation. Stainless steel shackle head and compatibility with sharp fixing points. Learn More
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Series 40 RTM OrbitBlock,Manual, Single, SwivelSKU: RF46100MNow you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company that offers a 40mm ratchet block with both auto and manual engagement models* Learn More
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Series 40 Ratchet Orbit Block Single, AutoSKU: RF46101Now you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company that offers a 40mm ratchet block with both auto and manual engagement models* Learn More
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Series 40 Ratchet Orbit Block Single, ManualSKU: RF46102Manual modes allow the ratchet mechanism to be switched on or off as required. This is the preferred mainsheet set-up for many top sailors. Learn More