Coupler Lock, Lock Type Universal, For Use With Trailer Couplers, Hole Diameter 1 7/8 in, 2 5/16 in, 2 in, Vehicle Class III, IV, Features Dual Ball Bearing Locking System, Square Key Design Virtually Eliminates Lock Picking, Includes (2) Keys, Dust Cover, Rubber Dust Cover, Finish Chrome WARNING: Cancer - www.P65Warnings.ca.gov -