TriMax UMAX50 Coupler Lock

The UMAX 50 features a rugged corrosion resistant finish. Provides instant security for your camper, boat or trailer when they are not hooked up to your vehicle. Features 1/2 turn technology that cannot be false locked. * One size fits all (from 1 7/8", 2", to 2 5/16", all coupler types) * Key hole cover slides up to seal out dirt and grime * Type A key which is a spring loaded, 7 pin, high security key. Resists attempted drill outs. Rugged and durable, the key will not bend or break. * LIFETIME WARRANTY * Huge 6 tooth, 3/8" dual ratchet locking system * Hardened 5/8" 16mm steel shackle