An extension of your attitude for all to see, USA Flag Hitch Cover is a hitch cover to match your personal style. This hitch cover is CNC machined crafted from 6061-T6 aircraft aluminum. Made with a 2" square 2 hole adapter to fit most applications. Installation takes a matter of seconds to make your truck's detail complete all the way around. Pin Not Included. If your vehicle has a 1 1/4 inch receiver hitch, you can ensure a perfect fit with the 1 1/4 inch Adapter (part number 1100S).