Harken 38mm Big Bullet Double Block for a highload 4:1 or 5:1 purchasing system.
Big Bullet blocks can be used as main or jib sheet blocks on dinghies, or for control line applications, such as travelers, cunninghams or boom vangs on offshore boats. Low-friction Big Bullet Blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. Delrin sheave and ball bearings. Cheek material constructed from reinforced plastic with stainless steel straps. Where applicable, blocks use #10 fasteners.
Use as main or jib sheet blocks on dinghies, or control lines on offshore boats