Specialty Gas Regulator, Regulator Supply Type Cylinder, Gas Service Hydrogen, Methane, Stages Single Stage, Inlet Connection CGA-350, Outlet Connection 1/4 in MNPT, Delivery Pressure Range 0 to 125 psi, Gauge Size 2 in, Supply Pressure Gauge 4, 000 psi, Max. Inlet Pressure 3, 000 psi, Body Material Brass, Diaphragm Material Neoprene, Body Dia. 2.125 in, Includes Harris Model GP401 Single Stage Regulator, Standards CGA E-4, Regulator Application Laboratory. This item has been restricted from sale in the following state (s): []