S&Uuml;A Nitrogen Argon Helium Inert Gas Regulator Gauges CGA-580 Inlet Fitting 9/16" - 18 RH Outlet Fitting 1/4" Male Flare Outlet Adaptor Hose Barb Outlet Adaptor Max Inlet Pressure: 3000 psi - Delivery Pressure Range: 0-145 psi