One welder with three functions including MMA, TIG, CUT. Little spark, beautiful weldingseam,energy saving. ... 85%Insulation class: BProtection class: IP21Rated input current(TIG/MMA/Plasma CUT)): 20/29/ 35AOutput current adjustment ... CUT): 15-180/15-160/ 20-50AWorking voltage(TIG/MMA/Plasma CUT):17.2V/26.4V/120VGas ... flow: 2~5L/min(TIG), 80L/Min(CUT)Suitable diameter of rod: 4mmMax ...