7 Series Single Over the Top Block. Stainless Steel cage and base provide a solid platform for clean leads. Delrin(tm) ball bearing sheave ensure low-friction and high safe working loads.Sheave Dia. 2-3/8" (60 mm), Max Line 1/2" (13 mm), L 2-7/8" (73 mm), W 2-1/4" (57 mm), H 3-7/16" (87 mm), Bearing Height 2-5/16" (58 mm), Fastners (6), #10 RH (5 mm), C/C 2-13/16" (72 mm), SWL 1200 lbs. (545 kg), Weight 11.6 oz. (329 g)