Perfect for use on anything you need to lock up. Made of #64 hardened steel, heat treated, this thing is not messing around. It is 6.5 inches tall and 3 inches wide. Use it for locking your other tie downs, helmets, skis, snowboards, tools, safety chains for your trailer, wheelchairs, strollers, saddles, etc. Set your own three number security code and change it any time you like.