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Harken soft-attach Fly blocks are engineered to deliver exceptional strength with minimal mass, offering sailors significant power in a low-aerodynamic package. Specifically designed for high-tech line, these efficient blocks provide an incredible working load relative to their small size. They are ideal for use on foiling dinghies and sportboats, as well as for vang cascades and backstay systems on Grand-Prix racers.
Outer Race: The 29 mm blocks feature a one-piece titanium outer race and sheave.
Bearings: Stainless steel ball bearings and inner race ensure smooth operation and durability.
Sideplates: Composite fiber-reinforced sideplates contribute to the block's strength-to-weight ratio.
Accessories: Lashing line is not included with the block.
Specifications
• Brand: Harken
• Reference: 2171
• Length: 44 mm
• Weight: 26 g
• Maximum working load: 350 kg
• Breaking load: 700 kg
• Sheave Ø: 29 mm
• Maximum line Ø: 7 mm






