Blocks
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45mm Black Magic double loop blockSKU: HK3390Black 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. Learn More
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57mm Zircon double blockSKU: HK2197Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
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57mm Zircon double block with becketSKU: HK2198Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
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T2 40/18mm Carbo T2 blockSKU: HK2162The 18 mm block features stainless steel ball bearings and an integrated stainless inner race and rivet for optimal strength-to-weight. The 40 mm blocks feature composite sheaves that spin freely on Delrin® ball bearings with curved bearing races. Learn More
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40mm Carbo T2 Soft Attach double blockSKU: HK215040mm Carbo T2 Soft Attach double block. Weighs only 48 gram and a line of max 10mm can be used. Has a max working load of 317 kg and a breaking load of 952 kg. Learn More
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57mm Carbo T2 Soft Attach double blockSKU: HK215357mm Carbo T2 Soft Attach double block. Weighs only 107.5 gram and a line of max 11mm can be used. Has a max working load of 490 kg and a breaking load of 1451 kg. Learn More
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40mm Carbo double fixed blockSKU: HK2642Harken 40 mm Carbo double fixed block. Use lines up to 10 mm, it has a working load of 440 kg, a breaking strength of 1080 kg and weights 80 gram Learn More
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40mm Carbo double fixed block with becketSKU: HK2643Harken 40 mm Carbo double fixed block with becket. Use lines up to 10 mm, it has a working load of 440 kg, a breaking strength of 1080 kg and weighs 84 gram Learn More
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Double upright Big Bullet Block 5mm (#10) RH FastenersSKU: HK223Low-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. Learn More
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In-Line Exit Big Bullet Block 5mm (#10) FH FastenersSKU: HK134Low-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. Learn More