CURT coupler locks are designed to add security to your trailer and towing equipment. Instead of merely retaining the coupler latch mechanism, they lock it into place and greatly deter any tampering and theft of your trailer while it is coupled to your vehicle. CURT coupler locks are key-operated and come in several different styles for you to choose from. This coupler lock features a compact design to keep the pin well protected from tampering. It comes with a brass finish. Protect your boat, your camper and even your utility trailer the right way with a CURT coupler lock.