Miller MDX-250 1770038 Replacement MIG Welding Gun 15ft AccuLock MDX Consumables This gun is a direct replacement for a Miller MDX-250 welding gun, 15ft, .035-.045" Wire, Part # 1770038. - 15ft 250A Mig gun fits Miller MDX-250 - Processes : Flux cored Gas Shielded - Wire Diameter Range : .025-.045 in ( Ready For Use .035"-.045" wire ) - Contact tip, Nozzle & all consumables fit original Miller AccuLock MDX Consumables ***Options : Add Kit (.023" .030" .035" .045") - One Nozzle fits N-M1200C 1/2 ID Flush - One Gas Diffuser fits D-M250 - One Neck Insulator fits 4623RM - 20-PK Contact Tips fits MDX TM023 / TM030 / TM035 /TM045