4 X 4 Trailer Hitch Cover Receiver Plug for Cars, Trucks, SUVs 4 X 4 trailer hitch cover as pictured Measures approximately 7 inches wide by 4 inches high Made of high quality, durable ABS plastic Body molded in one piece. No spot welding as in some metal models. Fits standard 2 inch receivers. You can either use spring clip (included  not pictured) to hold the hitch cover in place or use your own locking hitch pin.