Energy Efficient: The aluminum welder incorporates 2T/4T modes and HF Arc Start. 4T is useful if you have a long weld to do, as it saves your time. Non-contact arc initiation in TIG welders reduces tungsten and material consumption. Easy to Use: Whether your a novice, or a professional worker, this machine is an all round great welding machine.Both HF start hand torch control and precise foot pedal welding heat control. 200A AC/DC TIG welder can weld aluminum, stainless/carbon steel, copper and other color metal. Full arc control, pulse, Ac. Anything you could as for in a TIG welder this thing does very well. We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there's a problem, message us! We're happy to help.