Tweco® Copper Nozzle with 1/2" is perfect for standard gas diffuser. It is ideal for use in medium and heavy duty welding application up to 400 A. It is made from tellurium copper alloy features part number rolled stamped on the external surface for easy identification. Nozzle housing is made from tellurium copper alloy bar to assure consistent dimensional stability and efficient heat dissipation. It has a spatter shield contains each nozzle that is made from silicone material. It features threads onto the outer jacket assembly of water-cooled conductor tubes. Nozzle is sold as 1 per pack.