MOD Complete MDC99002 Argon Regulator With Flow meter TIG Welder MIG Welding CO2 Regulator 0 to 30 L/MIN 0-25 MPA Pressure Gauge CGA580 Inlet Connection Gas Welding Regulator Built-In Flow Meter Perfect for All TIG And MIG Welding Application. The Output Flow Is Adjustable From 0-3- L/MIN. Pressure Gauge: 0 - 25 MPA. Fits CGA - 580 Tank Fitting So It Fits All Argon, Helium, Nitrogen, And Argon/CO2 Mixed Gas Tanks.