This is a 2 in 1 combo welding machine, which can be used as tig welder and arc stick welder. It is ideal for repair work and professional use. Light-weighted welder with robust steel construction. Support 110V or 220V dual voltage input, easy to adjust output current: 20-140A. 60% duty circle, easy to start arc, less splash, with Max.5mm molten pool. High quality combo welder with appropriate price!!! Perfect choice for professional or daily repair works