ARC Welder 165A Inverter MMA Welder Machine 110/220V IGBT Digital Display Hot Start Portable Stick Welding Machine with Electrode Holder, Earth Clamp and Cable Adapter. 1 MMA 165A Welding Machine. ARC165 welder WT2040 adopts IGBT inverter technology, powerful welder capable of welding mild steel, weld steel, stainless steel and cast iron.