Used to clip your fender to rails, lifelines, side wing windows or cleats. Fender Tender II simplifies the handling and relocation of boat fenders. The "Railing Lock" firmly grasps rails from 7/8" to 1" dia. "Lifeline Lock" provides added safety. Use 1/4'' to 3/8" dia. nylon line. Made of tough, sun resistant plastic for many years of use. Sold in pairs.