The Model 355-2 Flowmeter kit is designed to control argon and or argon/CO2 mix shielding gases. This model includes a 3/16" x 10' approved inert gas hose. -- Heavy-Duty -- Pressure Regulation: N/A -- Gauges: 1.5" Steel -- One-piece encapsulated seat design with internal filter and PTFE Teflon® seat. -- 7 Year Warranty -- Made in the USA -- -- Brass body -- Gas-shielded welding and other industrial gas applications -- UL® listed; CGA E-4