Reconditioned 5 Gallon Ball Lock Kegs (Four Pack)This set of 4 reconditioned ball lock kegs plus 4 keg seal kits and 2 lb. of Oxygen Wash ships free and provides one of the best values. These used ball lock 5 gallon kegs have been tested and approved to hold pressure their most important task. Though the exteriors may have cosmetic imperfections, we guarantee that they are pressure capable, as each and every one is pressure tested. Needed, but not included, is a CO2 cylinder, Regulator, and Ball