Anodized aluminum “Hitch Mount”. Will easily fit in any 2″x 2″ square hitch receiver. This is used primarily for RV camping or even tailgating in a parking lot! A hitch pin is not provided. It comes with a sleeve to fit a 3″ diameter flagpole. Don’t forget the Reducer Sleeve for Mounts if your pole is the 15′ or 20′ LT (2.5″ base).