Product worked as advertised and attached my boat's spare tire to the boat trailer frame (3" wide, 4" high). I used regular lug nuts to attach the tire to the u-bolt and then put the locking arms in place. It would be nice if the nuts were included, but I already had them. My only complaint is that I didn't receive keys for the lock in the package. Also, there was no key number on the lock so I can't even take it to a locksmith to have a key made for it which rendered the lock useless and I ended up throwing it away.