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Harken 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. Fly blocks are perfect for use on foiling dinghies and sportboats and for vang cascades and backstay systems on Grand-Prix racers.
Integrated Inner Race: 18 mm blocks feature an integrated stainless steel inner race and rivet.
Stainless Steel Bearings: The blocks utilize stainless steel ball bearings for smooth operation.
Composite Sideplates: Constructed with composite fiber-reinforced sideplates for durability and light weight.
Composite Line Guides: Doubles feature composite line guides that are integrated into the block head.
Alignment Mechanism: The line guides keep the block aligned correctly by pushing the lashing line to the outer edges of the block's head.
Included Line: A length of Spectra line is included.
Specifications
• Brand: Harken
• Reference: 2158
• Sheave Ø: 18 mm
• Length: 28 mm
• Weight: 17 g
• Maximum line Ø: 5 mm
• Maximum working load: 204 kg
• Breaking load: 680 kg






