A specially designed rubber molding which fits over the top of standard winches converting them to self-tailing This simple operation works when the line is sheeted under load which means the coils climb up the winch drum and then become gripped by the underside of the Winchers rubber body Cleating is achieved by locking the sheet into the Winchers ribbed central groove Features. Extra Large Wincher. Pack of 2Specifications. Weight 09 lbs