Let's Go Aero (SHP 2080 1/2" Silent Hitch Pin with Lock 1/2 inch anti-rattle locking pin for 1.25 inch receivers. Chrome coated pin with steel spring loaded nut provides corrosion-free performance. Transferable to any 1.25 in. device that is hollow Barrel style lock with rubber dust cap for weather-proofing, set of round security style keys included. Let's Go Aero U.S. Patents: 6,409,203; 6,609,725; 6,945,550; 8,079,613