Gas Diffuser, Compatible with Brand Miller, Series Roughneck, Gas Diffuser Number 206195, Compatible with Series Roughneck C-Series, Compatible with Model C-3010, C-3012, C-3015, C-4010, C-4012, C-4015, C-5010, C-5012, C-5015, For Contact Tip Series FasTip, Welding Processes Flux-Cored Welding (FCAW), MIG Welding (GMAW), Connection Thread Type Slip-On, Diffuser to Tip Relationship 1/8 in Recess, Features 360 Degrees Wrench Rotatable, Aluminum-Jacketed Gooseneck, For Use With ROUGHNECK Guns