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These Harken soft-attach Fly blocks deliver exceptional strength with minimal mass, offering high power in a compact, low-aero profile. Specifically engineered for high-tech line, they provide an impressive working load relative to their small size. These efficient blocks are ideal for foiling dinghies, sportboats, and for use in vang cascades and backstay systems on Grand-Prix racers.
Materials: The 29 mm and 40 mm blocks feature a one-piece titanium outer race and sheave, stainless steel ball bearings and inner race, and composite fiber-reinforced sideplates.
Accessories: Lashing line is not included.
Specifications
• Brand: Harken
• Reference: 2173
• Length: 58 mm
• Weight: 62.2 g
• Maximum working load: 650 kg
• Breaking load: 1300 kg
• Sheave Ø: 40 mm
• Maximum line Ø: 9 mm






