Easy to use-This welding machine uses 0.30/. It has infinite voltage and wire feed speed control so you can dial in the perfect weld! Portable Welder- Lightweight 11 lbs, features a convenient carry handle, easily carried to any Do-It-Yourself. Maintenance, Repair, Metal Fabrication and Hobbyist project. Safety-Automatic compensation for voltage fluctuation, over current protection, over load protection. Powerful- Up to 135 Amp output that allows you to weld mild steel up to 1/8(3.2 millimeters) in plate. Efficient-Advanced IGBT DC Inverter Technology, the weight and volume decrease greatly while the conversion efficiency increase of more than 30%, Energy-saving.