Double Stainless Steel Foot Block 37-5637 56 Single Stainless Steel Foot Block. Computer machined base features aluminum sheaves with our nomex(tm) Teflon(tm) bearing and Delrin(tm) ball bearings for a low friction high strength block. Stainless Steel top plate is easily removed for installation. Computer machined aluminum Wide base spreads loads over a wide area. Boat Size Up To LOA, 38', Disp. 18000 lbs., Sail Area 715 sq. ft. (11. 5 m, 8182 kg, 66 m2), Sheave Dia. 3 1 4" (83 mm), Max
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