This gun is a direct replacement for a Miller MDX-250 welding gun, 15ft, .030-.035" Wire, Part # 1770037.. Wire Diameter Range : .025-.045 in ( Ready For Use .030"-.035" 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.
