Flowmeter Regulator, Compatible Gas Type Argon, Carbon Dioxide, Helium, Mounting Type Pipeline, Regulator, Inlet Connection Gender Female, Inlet Connection Size 1/4 in, Inlet Connection Type NPT, Maximum Inlet Pressure 30 psig, Outlet Connection Gender Female, Outlet Connection Size 5/8 In.-18, Outlet Connection Type UNF, Argon Flow Rate (Maximum) 55 scfh, Carbon Dioxide Flow Rate (Maximum) 55 scfh, Helium Flow Rate (Maximum) 160 scfh, Product Type Flowmeter, Included Hose Ball, Resin Tube