Weldmark® by Tweco® series Gas Diffuser is perfect for use with slip-on nozzle assemblies with 450 A MIG gun series as well as eliminator front-end consumables. Gas diffuser has magnificent electrical properties making it ideal for use in light to medium duty standard welding application up to 450 A. 2.27" Gas diffuser with 3/8"-24UNF-2A thread size has four 0.094" gas holes. It features part number rolled stamped on the external surface and overall length for easy identification. Gas diffuser is made from 360-brass alloy bar stock offers consistent dimensional stability. It features machined threads on the external surface to let the nozzle assemblies to thread over and accommodate the nozzle in place during the welding process. Gas diffuser features a conduit set screw that can accommodate the conduit liner in place. It has a proper threaded conductor tube to use with MIG guns. Gas diffuser is sold as 5 per pack.