The Model 301Ar/CD shielding gas kit includes 10' of 3?16" ID approved hose with inert fittings. They FEATURE the Harris time proven 301 flowgauge regulators provide precise control of the most common welding shielding gases up to 60 SCFH. -- Medium to Heavy-Duty -- Pressure Regulation: N/A -- Gauges: 2" Steel -- One-piece encapsulated seat design with internal filter and PTFE Teflon® seat. -- 7 Year Warranty -- Made in the USA -- Neoprene Diaphragm -- Brass body -- Gas-shielded welding and other industrial gas applications -- UL® listed; CGA E-4