The Eastwood Elite Series Spool Gun instantly turns your MP140i or MP200i steel welder into one that can quickly weld aluminum, too. Simply attach the spool gun using a standard dinse connector and you can then use your multi-process welder on aluminum up to ¼-inch thick. The gun works with 0.030-0.035” aluminum wire and comes with two 0.030” contact tips plus a hex key for tightening it. Get a three-year warranty and lifetime technical support when you order from Eastwood.