Argon Regulator TIG Welder MIG Welding CO2 Flowmeter 10 to 60 CFH - 0 to 4000 psi pressure gauge CGA580 inlet Connection Gas Welder Welding Regulator More Accurate Gas Metering For Gas Delivery System Perfect for All TIG and MIG Welding Application. Precise Gas MeterinG. Output Flow Is Adjustable From 10 To 60 (CFH) Cubic Feet Per Hour. Pressure Gauge: 0 - 4000 PSI. Fits CGA - 580 Tank Fitting So It Fits All Argon, Helium, Nitrogen, And Argon/CO2 Mixed Gas Tanks.