Makita MMA-400 IGBT DC Inverter ARC Welding Machine is a portable, fan-cooled welding machine designed for various welding applications. It utilizes advanced IGBT inverter technology, offering stable performance, high duty cycle, and precise control. The machine is capable of handling a wide range of electrodes (1.6-5.0mm) and provides a stepless current adjustment with a range of 20-400A. It also features protections against overload, overheating, and electrode sticking.