Harken Standard Double Cam-Mactic® Cleat 412 sheaves Lewmar's Synchro Blocks are engineered

Lewmar's Synchro Blocks are engineered for speed

Twin ball bearing race

requiring expensive and time-consuming grinding and sanding to remove marine growth at every haul-out

The gas cylinder is sold separately

Harken Standard Double Cam-Mactic® Cleat 412 sheaves Lewmar's Synchro Blocks are engineeredStandard Double Cam Mactic Cleat Part No. 412 Harken ball bearing cam cleats hold lines securely and release instantly for easy, precise trimming. Aluminum Cam Matics are hardcoat anodized for high load, high wear, continuous adjustment applications. Maximum line (mm) 10 mm Maximum line (in) 3 8 in Maximum working load (kg) 227 kg Maximum working load (lb) 500 lb Minimum line (mm) 8 mm Minimum line (in) 5 16 in