Red Devil Trailer Hitch Cover Receiver Plug for Cars, Trucks, SUVs Red Devil hitch cover as pictured Measures approximately 4.5 inches in diameter Made of high quality, durable ABS plastic and weatherproofed polyurethane encapsulated decal 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