Blocks
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18mm Fly Block tripleSKU: HK2180Harkens triple sheave block for trimmlines up to ø5mm with open center for soft-attach loop or lashing. Has a max. working load of 125 kg and a breaking load of 450 kg. Learn More
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29mm FLY BlockSKU: HK2171Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed specifically for high-tech line, these efficient blocks have an incredible working load for their small size. Learn More
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40mm FLY BlockSKU: HK2173Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed specifically for high-tech line, these efficient blocks have an incredible working load for their small size. Learn More
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18mm Double Carbo Fly blockSKU: HK215818 mm Carbo T2 Soft Attach double block. Weighs only 17 gram and a line of max. 5 mm can be used. Has a max. working load of 204 kg and a breaking load of 680 kg. Learn More
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18mm Carbo Fly block narrowSKU: HK216118 mm Carbo T2 Soft Attach block. Weighs only 7.2 gram and a line of max. 5 mm can be used. Has a max. working load of 125 kg and a breaking load of 450 kg. Learn More
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18mm Carbo Fly blockSKU: HK269818 mm Carbo T2 Soft Attach block. Weighs only 7.2 gram and a line of max. 5 mm can be used. Has a max. working load of 125 kg and a breaking load of 450 kg. 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, 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 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
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Series 40 RTA OrbitBlock,Cheek,Clockwise RotationSKU: RF46151Clockwise rotation. Fully automatic, load sensing ratchet engagement. Recessed underside to suit curved mounting surface. Low mounting points for maximum strength Learn More
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Series 40 RTA OrbitBlock, Cheek, Anti-Clockwise RotationSKU: RF46151AAnti-clockwise rotation. Fully automatic, load sensing ratchet engagement. Recessed underside to suit curved mounting surface. Low mounting points for maximum strength Learn More