This is a substantial locking set. the receiver latch lock will adjust to length needed to prevent extra wiggle and is thicker than expected. Both a 1/2 inch short trailer hitch lock and a sleeve to for use on 5/8 inch diameter AS WELL AS a longer 5/8 inch trailer hitch lock. The main piece for locking the hitch to prevent people from driving off with your trailer is very substantial. Allowed me to lock up my safety chains and has a plastic guard to prevent dirt from getting in the locking mechanism. The barrel style keys are sturdy and I don't expect them to be damaged or break. I did put a small amount of lubricant on all working parts to try to prevent rust issues since that seemed to be the main complaint that people had.