These replacement pins for the Rebellion XD ball mount are designed to replace the hitch pins of the vertical shank. They securely attach the trailer ball tongue or other accessory to the adjustable shank and are retained with the Rebellion XD spring clip. 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.