18 mm Fly™ Soft-Attach Double Block Harken Shackle pin Ø (in)5/16 in

Shackle pin Ø (in)5/16 in

Breaking load (lb)2200 lb

these efficient blocks have an incredible working load for their small size

Bow shackles are best for multidirectional loads

Length (in)7 1/4 in

18 mm Fly™ Soft-Attach Double Block Harken Shackle pin Ø (in)5/16 inPart No. 2158 Sheave (mm)18 mm Sheave (in)23 32 in Maximum line (mm)5 mm Maximum line (in)3 16 in Maximum working load (kg)204 kg Maximum working load (lb)450 lb 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