Trimax UMAX50 Premium Die-Cast Dual Purpose Coupler Lock

 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.