Miller AccuLock Diffuser for MDX-250 MIG Guns, 2/pk - D-M250
Contact tip is aligned and centered with the liner lock when the diffuser is tightened creating a flawless wire-feed path. Reduces burn backs, bird-nesting and erratic arc.
Coarse thread speeds contact tip replacement.
Tapers lock the contact tip to the diffuser and the diffuser to the neck for excellent electrical conductivity.
Contact tip tail is cooled inside the diffuser by shielding gas.