AccuLock MDX Diffuser for MDX-250 MIG Guns (2 per pkg)

Optimized Wire-Feeding Contact tip is aligned and centered with the liner lock when the diffuser is tightened creating a flawless wire-feed path. Reduces burnbacks, bird-nesting and erratic arc. Quick Replacement Coarse thread speeds contact tip replacement. Tapered Connection Tapers lock the contact tip to the diffuser and the diffuser to the neck for excellent electrical conductivity. Cooling Tail Contact tip tail is cooled inside the diffuser by shielding gas. Fits Millermatic 212,252, 255 Multimatic 200,255 Welding machines How to Change Consumables on Your MDX MIG Gun