This Rebellion XD ball mount lock set enhances the security of your hitch setup. It includes a receiver hitch lock for 2" or 2-1/2" receivers, as well as a tongue lock, locking the Rebellion XD adjustable attachment in place on the vertical shank. The hitch lock is constructed from stainless steel, and the tongue lock is made from cast aluminum. The tongue lock mounts over the top of the vertical-shank attachment pins for a unique, integrated design. Both locks in this set have 1/4-turn lock activation and are keyed alike for convenience. The Rebellion XD adjustable ball mount is a leap forward in cushion hitch technology. It provides more control, confidence and a more comfortable ride, all while protecting your towing system from jerking, jarring and rattling. The Rebellion XD is not included in this package and must be purchased separately.