buries lead control lines through the deck and bulkhead of dinghies and small small daysailors.Micro Low-friction extremely lightweight, free-running blocks are compact. Designed for any number of uses on dinghies and for lightly loaded control lines on boats of all sizes. Derlin ball bearings are UV stablized with carbon black for maximum protection and stainless steel sideplates add strength. Use inside masts, booms, lead car returns and tackle. Where applicable, blocks use #10 fasteners sold separately.Key FeaturesExtremely lightweight, free-running blocksDesigned for use on dinghies or for lightly-loaded control lines on boats of all sizesBlocks are compact and Low-frictionPolished 316 stainless steelDelrin ball bearingsSheave Diameter: 7/8" (22 mm)Max. Line Diameter: 1/4" (6 mm)Max. Working Load (MWL): 200 lb. (91 kg)Breaking Load: 1200 lb. (544 kg) Weight: 1 oz. (28 g)Length: 2 5/8" (67 mm)