Master Lock Adjustable Coupler Lock. Nickel plated, zinc die-cast body with a front access key-way for ease of accessibility. One of the unique features of this lock is the ratcheting shaft which allows it to fit most 2-5/16 inch couplers: Titan, Atwood, Reese, Shelby, Valley, Acme, Dico, Ideal, Marvel and Dutton-Lainson. Packaged.
