The Lotos IGBT LTPAC2500 is a FIVE-IN-ONE Digital Plasma Cutter (60A) / AC Tig Welder (250A) / DC Tig Welder (250A) / AC Stick (Or Arc) Pulse Welder (250A) / DC stick (or Arc) Welder (250A) . You would have to purchase 5 separate machines to do what this ONE machine can do! Using this heavy duty 60A plasma cutter is cheaper than Oxyacetylene after just a few cuts. Torch head is low profile for tight spaces. High Frequency IGBT DC Plasma cuts thicker materials than standard DC plasma cutters and cuts faster with less distortion in the work piece. It"s packed with full features like the separate machines. Both the AC and DC Tig welds from this LTPAC2500 are clean and strong for both Aluminum and Stainless Steels. This Tig welder is easier to use than any other Tig welder on the planet! Just flip a switch, set your amperage and weld...It"s that simple. The footpedal comes with LTPAC2500, customer can dynamically control welding heat by this heavy duty footpedal. This machine will weld ANY kind of metal, including ALUMINUM, Steel, Stainless Steel, Moly, Ferrous etc. An ARC welder with PULSE feature is a necessity in any industrial shop or home workshop. There are welding jobs that simply require ARC or SMAW (Shielded Metal Arc Welding). Fill large gaps, holes, weld cast iron and weld extra thick steel with stick. With Arc welding, no shielding gas is required. In many ways stick arc welding is like MIG except there is no wire feed. ARC welding does not require any gas supply. With this LTPAC2500, you can ARC weld any kind of Metal, including ALUMINUM, Steel, Stainless Steel, Moly, Ferrous etc.