Description Double Fixed Conventional Sailboat Block Ball bearing design with long lasting characteristics. Technical Description Features Metric American Working Load 600 lb 272.15 kg Breaking Load 2000 lb 907.18 kg Length 3.54 in 90 mm Width 1.73 in 44 mm Maximum Rope Line 0.37 in 9.52 mm Sheave diameter 1.54 in 39 mm Weight 0.26 lb 119 g