... trigger AC/DC Pulse tig welder current can be adjusted by pedal control 1 year warranty Portable Portable AC DC Pulse TIG Welder1,Digital display,2T/4T trigger.AC/DC,current ... , titanium and non-ferrous metal with DC TIG,aluminum alloy welding is available by AC function3,small size,light weight,low noiseSpecification ... current(%)10-90Welding thickness(mm)0.5-12 Portable AC DC Pulse TIG Welder-WSME200