Widely used on a variety of material such as mild steel,carbon steel,alloy steel in the industries of structural steel, Portable,Rugged,AffordableProfessional PerformanceTouch start TIG operation allows you to strike the arc easily without high frenquencyAuto adaptive arc force minimizes electrode sticking in the puddle without compromising arc stability or increased spatterAutomatic hot-start boosts the current during starting ti make striking an arc easierIdeal for stick weldingAutoamtic over-voltage and over-current protectionDent resistant case is IP23 rated for outdoor use.