UMAX 100 Premium Universal Trailer Lock

* Key hole cover slides up to seal out dirt and grime. * Attractive ballistic grade black nylon housing absorbs hammer blows and protects against weather. * Type A round key which is a spring loaded, 7 pin high security. Resists attempted drill outs. Rugged and durable, the key will not bend or break. * Weighs 6 pounds. * Huge 6 tooth, 3/8" dual ratchet locking system. * Hardened 5/8" 16mm steel shackle. * LIFETIME WARRANTY UMAX100 fits the following couplers, one size fits all (from 1 7/8", 2", to 2 5/16", all coupler types): 1 7/8" or 2" Fulton, Atwood 2", UFP, Bulldog, 2 5/16" couplers, Fulton Heavy Duty, Surge Brake (Reverse Mount)