5 Series Hinged fairlead block. Delrin(tm) ball bearing sheave has a low profile keeping control lines/halyards close to the deck on a low-friction sheave. Stainless Steel base and cheeks ensure a strong base. Sheave Dia. 2" (51 mm), Max Line 7/16" (11 mm), Length 3-1/4" (83 mm), Width 7/8" (22 mm), Height 3-1/16" (78 mm), Bearing Height 1-3/16" (30 mm), Fasteners (2), 1/4" FH (6 mm), C/C 2-1/8" (54 mm), SWL 1000 lbs. (454 kg), Weight 7.3 oz. (207 g)