Coupler Lock Lock Type Universal For Use With Trailer Couplers Hole Diameter 1 7/8 in 2 5/16 in 2 in Vehicle Class I II III IV V Features Adjustable 360 Degrees Locking Head Rotation for Easier Access Keys Have Premium Plastic Key Grips Sliding Key Slot Protector Keeps Tumblers Clean Includes (2) Flat Keys Finish Chrome