Tweco® Course Thread Nozzle with 0.625" bore size is perfect for standard gas diffuser and protects the quality of your welding as well as the life of your gun. 3.115" Nozzle with 1" OD making it ideal for use in medium and heavy duty welding application up to 300 A. It features part number rolled stamped on the external surface for easy identification. Nozzle with flush contact tip relationship 0.062" is made from tellurium copper alloy. 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 2 per pack.