Receiver and Coupler Lock Set Lock Type Push to Lock For Use With 1 1/4 in and 2 in Receivers Hole Diameter 1/2 in 5/8 in Vehicle Class I II III IV Features Keyed Alike Push to Lock Locking Mechanism Weather Tough Seal and Water Tight Cap Includes Receiver Lock Trailer Coupler Latch Lock Trailer Coupler Lock Finish Stainless Steel