... economy and practical One machine has three purposes,be able to work as TIG,MMA and CUT Parameter/ModelCT312CT416Input VoltageAC220V±15 ... Flow2-5——802-5——80Max Cutting Thickness————12————16Arcing WayHFContactHFHFContactHF1.Multi-function:TIG/MMA/CUT,original design;2.Easy and reliable ... various metal;6.Small and light , easy to move around and to install;7.Clever circuit design, simple in structure, ...