I really doubt that it’s got a “tig attachment.” The local HD’s don’t carry welding stuff anymore, but I’m guessing that you’re talking about either the Lincoln weldpack or the other 110v mig with the gas setup.

FWIW, if that’s what you’re looking for skip it, the drive setup in it will have you swearing and bitching every time you use it (combination of springs, washers, sheet metal bits and cardboard which just doesn’t work well). You can get a comparable but much better Hobart welder from b&r shipped to your door for about the same price.