Features: Inverters available for MMA, TIG, MIG, air plasma, STUD and submerged welding machines DC Inverter MMA Welding Machi Technical Characteristics for welding machine :1. Waterproof, anti ... .6-3.21.6-3.2Machine case materialSteelSteelPlastic or SteelDC Inverter MMA Welding Machine (welding machine, inverter mma welding machine)