2-in-1 MIG and MMA MAILTANK (SH-197) MIG-250 Inverter Type Gasless Welding Machine MIG Flux Cored Specifications: Power voltage: 220V Frequency: 50/60Hz Type of wire feeding machine: compact Wire Speed: 2.5-13 m/min Wire wheel diameter: 0.8/1.0mm Suitable Thickness: Above 0.8mm Inverter Type Gasless MIG Welding Machine smooth and very portable due to its GASLESS technology function.