This lock set includes a receiver hitch pin lock and a wide lever coupler lock for complete security. The receiver lock has a forged and hardened chrome 5/8" pin for standard 2" x 2" receivers. Test specifications exceed 32,000lbs. These rugged locks can't pop open or be false locked. The coupler lock has a hardened 7mm pin for wide lever couplers between 2" and 2-1/2". The 1/4 turn locks make installing and removing a breeze. The weather tight caps helps to keep dirt and debris out of the locking mechanisms. Comes with 4 high quality tubular keys that are keyed alike for convenience.  • Includes 2" receiver and trigger coupler locks • Keyed alike for convenience • Coupler lock has 7MM pin • Fit wide lever couplers from 2" to 2-1/2"  • 1/4 Turn lock • Weather tight caps • Secure tubular keys