57mm Carbo Block Flip Flop with CamSmall Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles.Features:Sheave Ø (mm) 57 mmSheave Ø (in) 2 1/4 inMaximum line Ø (mm) 10 mmMaximum line Ø (in) 3/8 inMaximum working load (kg) 136 kgMaximum working load (lb) 300 lb