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

sanitized® fabric

The handle and grab bar are cross-ribbed and braced for enhanced stiffness

specifically designed for high-speed sailing

The weight of this high-strength block is only a few ounces

Harken 57mm Flip-Flop SB Block 2142 International these efficient blocks have anSmall Boat Flip Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles. Part No. 2142 Sheave (mm) 57 mm Sheave (in) 2 1 4 in Maximum line (mm) 10 mm Maximum line (in) 3 8 in Maximum working load (kg) 227 kg Maximum working load (lb) 500 lb