shows its muscle welding thin sheets of mild steel, stainless steel, and aluminium. designed for ease of use when welding mild steel and stainless steel. power compact 200etc inverter super auto 200a2, 350ca2, 500ca2, 500......shows its muscle welding thin sheets of mild steel, stainless steel, and aluminium. designed for ease of use when welding mild steel and stainless steel. power compact 200etc inverter super auto 200a2, 350ca2, 500ca2, 500cad 200cs2, 350s2, 500cs2