Gas Regulator, Maximum Gauge Outlet Pressure 4,000 psig, Number of Stages Single Stage, Compatible Gas Type Oxygen, Control Type T-Handle, Inlet Connection Type NGO, Inlet Connection Gender Male, Inlet Connection Size 0.825 In.-14, Outlet Pressure (Maximum) 275 psig, Outlet Connection Gender Male, Outlet Connection Size 9/16 In.-18, Outlet Connection Type UNF, Body Material Brass, Diaphragm Material Stainless Steel, CGA Number CGA 540, Hose Fitting Size B WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -