HARKEN double block 57 mm Carbo, smooth-running block, reliability and high load capacity

The powerful, smooth-running 57mm Carbo double block impresses with its low weight, high load-bearing capacity, and reliability. The cheeks and sheaves are made of high-strength, lightweight Carbo composite. Free-running Delrin ball bearings ensure smooth running, even under heavy loads. Round bearing shells distribute forces evenly and increase load-bearing capacity. The freely rotating pin can be locked in two positions. The heavy-duty, forged shackle guarantees secure attachment. Perfect for precise trimming of sheets on dinghies and performance-oriented sports boats, as well as for control lines, even on large yachts. The Carbo double block is suitable for 3:1 and 4:1 ratios.