... powerful switch design(IGBT).With 2T & 4T functions.When switching to stick welding(MMA), downwar welding function is available on cellulose welding electrode.It ... air and arc of carbon stick.It is used for welding various of stainless steel, carbon steel, alloy steel, brass ... so on.Dual functions welder, TIG for root welding and MMA for arc cap welding.Normal Accessories:Earth clamp 1pcs, fast joint ...