Boats to 28'. Swivel head may be locked in place to avoid twists or allowed to swivel. Delrin Sheave, Aluminum Cheeks, combine with 5 series adapters for a variety of leads. Sheave Dia. 2", Thickness 15/16", Width 2 1/8", Length 4 13/32", SWL 1750 lbs., Weight 5oz., Max Line size 7/16".