... , economy and practical One machine has three purposes,be able to work as TIG,MMA and CUT Parameter/ModelCT312CT416Input VoltageAC220V±15 ... various metal;6.Small and light , easy to move around and to install;7.Clever circuit design, simple in structure,particular in ... other specific details MULTI-FUNCTION TIG/ MMA/ CUT welding machine(CT-312/416/518)