This base is designed to work with the Round Metal Covers available at any hardware store in the Electric Department. Once attached together and locked down on to a stable surface these make perfect training targets. Easily adjustable length of the screw changes how much energy is needed to take down the target. Place them around your yard or make a target tree (check out the YouTube video below) to keep your skills sharp and enhance your airsoft experience. The price is for one Swivel Piece (target retainer) and one Base. You will need to supply your own screws, nut and bolt and some sort of target (can be a smashed down soda can), I recommend the outlet covers as shown in the video.