MULTI FUNCTION: With IGBT inverter technology, the little beast ARC165 welder WT2040 is capable of welding mild steel, weld steel, stainless steel and cast iron. ENERGY SAVING: Reduce the damage of Copper and Iron, obviously increase the welding frequency, and energy-conserving result is remarkable. PORTABLE DESIGN: With stable current output, long-distance transmission loss, this 3.2kg welder features high efficiency in an easy carrying handle. MULTI USE: the little welding machine can weld steel, stainless steel, titanium, magnesium and copper. COMPACT KIT Supported by accessories, the welding kit is easy and safe to operate. The little monster is not just welding kit, but a work of art.