... welding electrode.It has the pertfect functions in over-voltage, under-voltage, over-current and over-loaded.It has high efficiency, small ... high resist to electrical wave (V±15%).It is easily arc, small flash, low noise, which can improve working surrounding.That above ... so on.Dual functions welder, TIG for root welding and MMA for arc cap welding.Normal Accessories:Earth clamp 1pcs, fast joint 2pcs ...