Taylor Made Products 1139, Pontoon Boat Rail Fender Hanger /  Adjuster, Pack of 4 The original pontoon rail fender clip Designed to fit both 1.25" and 1 square tube rails on pontoon boats Clamps securely to square tubing yet can be repositioned quickly and easily Constructed from durable ABS plastic Allows for simple height adjustment of fenders For lines up to 3/8 inch