Coupler Vault (2 5/16", Grey)
10 Pounds of Solid Trailer Lock!  The only 5-sided box style coupler lock in the industry that encloses the trailer coupler making it impossible to hook to the ball of a tow vehicle. The box is made of 3/16" harden steel, and then powder coated to protect against rust. The push lock locking mechanism is stainless steel so it will not rust or corrode. The push lock has 500 different key combinations. The adjustable bolt ball allows you to adjust the height to fit tight into your trailer coupler. Once adjusted and locked into place the loose fit on your coupler does not allow anyone to try to attempt to cut on it with a hacksaw or saws-all.