[MORE POWERFUL] Up to 135 Amp output allows you to weld mild steel up to 2/5” in the plate. Suitable for .030” & .035” flux core wire. [MULTI-PROCESS] Gasless MIG/Stick/Lift TIG, 3-in-1 Welder. (need to buy extra tig lift torch, not included inside product). [SIMPLE TO USE] Automatic change of the voltage & wire feeding speed by adjusting the amperage. [SAFETY FIRST] Automatic compensation for voltage fluctuation, over current protection, over load protection. [LIGHTWEIGHT&PORTABLE] Only weigh 11.4 lbs, it's very convenient to take it everywhere.