08-92 Stand up spring block for 1-1/4" T-Track. Delrin(tm) sheave runs on Nomex(tm)/Teflon(tm) bearing ensures smooth operation and high safe working load. Stainless Steel cheeks and stainless steel slider ensure reliability. Polyethylene liner and pin stop allow for easy adjustment. Track Size 1-1/4" x 3/16" (32 mm x 5 mm), Boat Size Up To LOA 38', 18000 lbs., 715 sq. ft. (11.5 m, 8182 kg, 66 m2), Sheave Dia. 2-3/8" (60 mm), Max Line 9/16" (14 mm), L 4" (102 mm), W 1-9/16" (39 mm), H 4-7/8" (124 mm), Bearing Height 2-23/32" (69 mm), SWL 2750 lbs. (1250 kg), Weight 1 lb. (454 g)