Blocks
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75mm Carbo double block with becketSKU: HK2663Harken 75mm Carbo double block with becket. Great block for big boats, mainly used for sheetingsystems and trimlines. Can be used for lines up to 14mm and weights 419 gram. Has a max workload of 1100 kg and a breakingstrenght of 2722 kg. Learn More
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75mm Carbo triple blockSKU: HK2664Harken 75mm Carbo triple block. Great block for big boats, mainly used for sheetingsystems and trimlines. Can be used for lines up to 14mm and weights 580 gram. Has a max workload of 1650 kg and a breaking strength of 4535 kg. Learn More
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75mm Carbo triple block with becketSKU: HK2665Harken 75mm Carbo triple block with becket. Great block for big boats, mainly used for sheetingsystems and trimlines. Can be used for lines up to 14mm and weights 599 gram. Has a max workload of 1650 kg and a breaking strength of 4535 kg. Learn More
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75mm Carbo ratchet blockSKU: HK2670Harken 75mm Carbo ratchet block. Great block for big boats, mainly used for sheeting systems and trimlines. Can be used for lines up to 12mm and weighs 227 gram. Has a max workload of 341 kg and a breaking strength of 1361 kg. Learn More
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75mm Carbo ratchet block with becketSKU: HK2671Harken 75mm Carbo ratchet block with becket. Great block for big boats, mainly used for sheetingsystems and trimlines. Can be used for lines up to 12mm and weighs 248 gram. Has a max workload of 341 kg and a breaking strength of 1361 kg. Learn More
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57mm Carbo fiddle with ratchetSKU: HK2673Harken 57mm Carbo fiddle with ratchet. Great for sheetingsystems and downhalls. Use line up to 10 mm and the block weighs 113 gram. Max workload is 360kg and breaking strength is 1080 kg. Learn More
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57mm Carbo fiddle with ratchet and becketSKU: HK2674Harken 57mm Carbo fiddle with ratchet and becket. Great for sheetingsystems and downhalls. Use line up to 10 mm and the block weights 121 gram. Max workload is 360 kg and breaking strength is 1080 kg. Learn More
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75mm Carbo quad blockSKU: HK2677Harken 75mm Carbo quad block. Great block for big boats, mainly used for sheeting systems and trim lines. Can be used for lines up to 14mm and weights 772 gram. Has a max workload of 1650 kg and a breaking strength of 4535 kg. Learn More
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75mm Carbo automatic ratchet blockSKU: HK2680Harken 75mm Carbo automatic ratchet block. Great block for big boats, mainly used for sheeting systems and trim lines. Can be used for lines up to 12mm and weights 238 gram. Has a max workload of 341 kg and a breaking strength of 1361 kg. Learn More
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75mm Carbo automatic ratchet block with becketSKU: HK2681Harken 75mm Carbo automatic ratchet block with becket. Great block for big boats, mainly used for sheeting systems and trim lines. Can be used for lines up to 12mm and weighs 255 gram. Has a max workload of 341 kg and a breaking strength of 1361 kg. Learn More
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75mm Carbo fiddleSKU: HK2690Harken 75 mm Carbo fiddle. Great block for big boats, mainly used for sheeting systems and trim lines. Can be used for lines up to 14 mm and weights 238 gram. Has a max workload of 550 kg and a breaking strength of 1650 kg. Learn More
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75mm Carbo fiddle with becketSKU: HK2691Harken 75mm Carbo fiddle with becket. Great block for big boats, mainly used for sheeting systems and trim lines. Can be used for lines up to 14 mm and weights 257 gram. Has a max workload of 550 kg and a breaking strength of 1650 kg. Learn More
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75mm Carbo fiddle with ratchetSKU: HK2694Harken 75 mm Carbo fiddle with ratchet. Great block for big boats, mainly used for sheeting systems and trim lines. Can be used for lines up to 12 mm and weights 270 gram. Has a max. workload of 550 kg and a breaking strength of 1650 kg. Learn More
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75mm Carbo fiddle with ratchet and becketSKU: HK2695Harken 75 mm Carbo fiddle with ratchet and becket. Great block for big boats, mainly used for sheeting systems and trim lines. Can be used for lines up to 12 mm and weights 289 gram. Has a max. workload of 550 kg and a breaking strength of 1650 kg. Learn More
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57mm Carbo 5 sheave swivel block HK 2762SKU: HK2762Harken 57mm Carbo 5 sheave swivel block can be used for lines up to 10 mm and weighs 448 gram. Has a safe working load of 1080 kg and a breaking strength of 2270 kg. 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 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 55 BB Orbit Block, Single, Becket, Swivel head RF55110SKU: RF55110Swivel shackle head for unlimited block rotation. Stainless steel shackle head and compatibility with sharp fixing points. Ultra low profile integrated becket. Learn More
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Series 55 RT Orbit Block, Single Swivel Head RF56100SKU: RF56100Swivel shackle head for unlimited block rotation. Stainless steel shackle head and compatibility with sharp fixing points. Automatic & manual ratchet block Learn More