Gas Diffuser, Compatible with Brand Miller, Series FasTip, Gas Diffuser Number 227749, Compatible with Series Spoolmatic 15, Spoolmatic 30, XR-Pistol, Compatible with Model 130831, 195156, 198127, 198128, 198129, 198130, Duty Rating Heavy Duty, For Contact Tip Series FasTip, For Nozzle Series FasTip, Welding Processes MIG Welding (GMAW), Connection Thread Type Slip-On, Diffuser to Tip Relationship 1/8 in Recess, For Use With XR/XR-M, SPOOLMATIC 15/30A, XR-EDGE FASTIP, Material Brass