Webbing/Lashing Block. Computer machined block finished in hardcoat anodized black for durability. Torlon(tm) rollers and Delrin(tm) ball bearings ensure a low-friction aluminum sheave that will handle high loads. Machined center of the block may be used as a " becket" eliminating the need for other blocks. May be lashed through the end of the block or through the center hub. Lashing/Loops sold separately. Flushing holes in each cheek allow easy flushing. Safe Working Load 2800 lbs (1270kg), Weight 9.0oz (254gm), Max. Line 1/2" (12mm), Sheave Diameter 2.6" (66mm), Length 3.7" (94mm) Width 2.6" (66mm). Does NOT Include Webbing/Lashing. Care must be taken when attaching Block.