Harken 57mm Quad Block Swivel, Center Becket [HSB380] Marine Hardware | Hooks & Clamps NMMA Type Accepted #2577064

NMMA Type Accepted #2577064

Economy Jon Boat Seat Clamp - 8" to 19"

DC Analog Micro Voltmeter

Ideal for use in tidal areas

UPC: 632085083861

Harken 57mm Quad Block Swivel, Center Becket [HSB380] Marine Hardware | Hooks & Clamps NMMA Type Accepted #257706457mm Quad Block Swivel, Center Becket Low friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave (mm) 57 mm Sheave (in) 2 1 4 in Maximum line (mm) 10 mm Maximum line (in) 7 16 in Maximum working load (kg) 1080 kg Maximum working load (lb) 2380 lb