Super heavy duty oxygen regulator by Airco. This regulator is suitable for welding or medical applications. Tested and working. Dont let the ugly gauge, which does work, scare you away. This could also be used for CO2 for welding.Call, text, or email Johnny. If the ad is up the item is still available. I do not do codes Can be shipped - buyer pays $28 shipping and handling to USA addresses. Outside USA, please send info for shipping quote.All sales are final. You are responsible for determining if this item is correct for your application. Ask questions as needed and Ill answer to the best of my ability.