No Load Voltage: 56V Max Power. Output Current: 20-250A Power efficiency: 85% Duty Cycle: 60% Protection class: IP21 Insulation class: F Gas Supply: Clean, dry, oil-free argon gas Post Flow Time: 1 - 5 s TIG welding thickness: 0.3 - 4 mm MMA/ARC welding thickness: 2 - 10 mm Electrode diameter: 4.0 mm Welding material: stainless steel, alloy steel, carbon steel, cast iron. 2 in 1 TIG / STICK Welding Machine , allows switch between TIG weld and STICK weld quickly and easily Advanced IGBT inverter technology , excellent arc stability, ensures long time welding Hot start , automatically increases the amperage to eliminate the electrode sticking at arc start Digital display control , allows quickly adjusting output current ranging from 10 to 250A 1-5 seconds gas post flow time , support adjusting according to the actual welding demand Suitable to weld stainless steel, alloy steel, carbon steel or other non-ferrous metal. Please allow a bit error due to manual measurement. The color may have different as the difference display, please understand.1 x Arc Welding Machine 3 x Connector 1 x Wrench. The item "220V 7700W 2IN1 TIG/ARC Electric Welding Machine 20-250A MMA IGBT STICK Inverter" is in sale since Tuesday, March 3, 2020. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Welding & Soldering Equipment\Welding Equipment & Accessories\Welders, Cutters & Torches\TIG Welders". The seller is "kwotop2014" and is located in Shenzhen. This item can be shipped worldwide.