... 2.High quality, solid-brass body 3.Accurate, adjustable New Argon Gas Regulator Tig Mig Welding CO2 Air Inert 1. Suitable for ... use with argon, argon mix, air, inert gas, CO2, , helium, hydrogen, nitrogen & many other gas types depending on your tank threading2 ... meter design.for more information, please contact with us. New Argon Gas Regulator Tig Mig Welding CO2 Air Inert