(1) Hobart, Ironman 210 MIG welder(2) Spoolmate 185, spool gun with a DIY water cooled barrel. I added a home-make water cooling system for the barrel. The details for that are on the Welding Aluminum page.(3) Miller XMT 350 VS power source and X-TREME 8 VS SuitCase.(4) Suitcase MIG Welder