Whitecap Industries Spring-Loaded Cleat316 S.S. Spring-Lock Rign Buoy Cleat (round). Can Be installed horizontally or vertically. Holds fenders, when open and is only 5/8" high when closed. Requires (3) 3/16" fasteners.Features: Height - Open 1-1/4", Closed 5/8"; Hole Size - 3/4"; Fits Rope - up to 1/2";