• High quality disposable gas bottle • CO2 for mild steel • 390g for extended use • Argon CO2 for mild/stainless steel • Argon for aluminium • 390g CO2 disposable mild steel gas bottle; designed for all mild steel MIG steel welding • 390g Argon disposable mild steel gas bottle; designed for various TIG welding applications • Supplied in a heavy-duty pressurised bottle