White Night 4199 Fixed Mount Light Unit Designed for 2" receiver hitches. Refer to manufacturer for other sizes. Allows you to retain the use of your receiver hitch by attaching to the receiver unit with a U-bolt. When not using a hitch insert, the emblem can be snapped back into place to cover the opening. 3/4 inch clearance is required between the top of the hitch receiver tube and the bottom of the bumper.