... up to 50%,Toshiba MOSFET imported. Inverter DC TIG160 Welding equipment (MOSFET)1.Advance inverter technology,small size,simple circuit ... the voltage changes±10%5.adopt high frequency arc starting,pluse strike,perfect performance,adequate welding current,good quality with reasonable price ... be more than 50 sets.Accessaryearth clamp, brush and welding gun Inverter DC TIG160 Welding equipment(MOSFET)