• Fits 5/8in (16mm) receivers • Usable length of receiver pin is 2-3/4in (70mm) • Push to Lockâ„¢ locking mechanism - push lock body onto pin firmly and remove key • Weather Tough seal and water tight cap protects lock from moisture and dirt • Class III/IV; 10,000 lb. Load Rating • 4-pin cylinder for added pick resistance • K1 Key Blank