Oval Tow Trailer Hitch Cover Plug Insert 1 1/4 inch (1.25") Don't leave your tow hitch hole open and exposed for the world to see! Keep it covered and clean with this Graphics and More tow hitch cover. This cover will fit standard 1.25" receivers only. This will NOT fit the standard 2" receiver. The cover is made from black ABS plastic. The oval part of the cover is 5" X 3" in size.