10 Series Fiddle Block with Stainless Steel cheeks, becket and Aluminum "universal circuit" ball bearing sheaves. Aluminum sheaves run on Delrin(tm) ball bearings for a very strong yet low-friction sheave. Unique single top sheave and two in-line sheaves spread the load reducing friction and chafe. Stainless Steel D shackle run on a swivel head that may be locked in plate to avoid line twist. Bolted construction allows for easy maintainence. Removable becket allows for the use of pre-spliced line. Sheave Dia. 3 1/4" (83mm), Thickness 1 7/32" (31mm), Width 4 13/16" (122mm), Length 11 1/4" (286mm), SWL 3750 lbs (1750kg), Weight 3lbs 4oz (1.47kg), Max Line 5/8" (16mm)