1-★Upgraded IGBT Inverter Technology, MMA Welder 160 Amp <https://www.jlljd.net/product/mma-stick-inverter-welder/patented-design-mma-stick-welding-machine-mma160-b.html>is capable of welding mild steel, steel, stainless steel and cast iron. The advanced IGBT power device with unique control mode improves the reliability and efficiency of welding machine. Good choice for DIYers, welding hobbyists and home maintenance chores by using 3/32'' -1/8'' (2.5mm-3.2mm) welding electrodes. 2-★Energy Efficiency, The stable current from the most advanced IGBT tech, makes the welder reduce the damage of copper and iron, obviously increasing the welding frequency, and energy optimization result is remarkable. Voltage accurately matches and adjusts the current to ensure a stable current output, prevents overload conditions, and the multiple processing protection mechanism improves welding efficiency and ensures your safety. 3-★Portable Design, Arc welding machine features a easy-carrying handle, compact light weight body, and protective corner case design. The lightness and strength of its components make this welding machine a reliable welding tool for professionals or DIY use, no matter for your work indoors or outdoors.