3 Series Over The Top Triple/BB 300-423 Series Triple Over the Top Block. Stainless Steel cage and base provide a solid platform for clean leads. Delrin(tm) ball bearing sheaves ensure low friction and high safe working loads. Sheave Dia. 1 7 16" (37 mm), Max line 7 16" (11 mm), L 2 11 32" (60 mm), W 3 3 8" (86 mm), H 2 11 32" (60 mm), Bearing Height 1 13 32" (36 mm), Fastners (6), #10 RH (5 mm), C C 1 25 32" (45 mm), SWL 650 lbs. (295 kg), Weight 10. 0 oz. (328 g)
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