Order was quickly here. The wheel clamp is massive and certainly not as easy to crack. It adapts well to different sizes of tires, where it has not worked out so easily in my trailer. (Had a 5cm thick stone between the pad and claw wheel stuck because otherwise you can press off to the side the claw. The first picture here in the description of the claw is the problem, which can be mounted so not!) Otherwise, go to Mounting quite briskly, the supplied bag is a plus point. From me a strong buy recommendation .. The price of course is relatively high, but who wants a bit of security should not save here, since trailers are usually more expensive. ;)