Used for MIG and pulse MIG welding material up to half-inch thick with the highest output in its class, the Millermatic 255 is great for chassis building/repair, suspension systems, exhaust tubing, frame jigs and fixture making. Digital readouts and independent voltage and wire speed adjustment make this the professional, experienced welder-operator’s choice. It adapts easily to spool gun for aluminum MIG welding, and has removable, built-in running gear for easy, lightweight portability. It comes with digital meters and the Fan-On-Demand cooling system to help prolong unit life. $3,139.