Review on Trimax TC2 Coupler Lock by Edwin White

I bought this for my wife's horsebox. The label specifically states that it works on horse trailers. Not as it is, it will not be. Please note that each "bar" has a bevel on the inside. For use on a horse transporter, the slope must be larger. In fact, to make it work, I sanded down one side to make the bevel bigger. Then everything went fine, but I had to tinker a bit. Also, I'm not sure if the locking mechanism is that reliable. Either way, this should slow the thief down, but I'm afraid a set of bolt cutters or a big hammer will seal his downfall.