Used in light to medium duty welding application up to 250 amperes. Nozzle housing is cut and Formed from 122 DHP copper alloy tubing. Nozzle insert is machined from a solid brass allow and machining the internal threads to match the gas diffuser. Nozzle insulator is made from G7 silicone material, providing the electrical insulation needed from the gas diffuser. Part No. rolled stamped on the outside surface for easy identification. 3-piece design does not require an additional insulator. Threads onto a standard EL gas diffuser.