Everlast PT325EXT Everlast PowerTIG 325EXT 320 AMP Digital ACDC TIG welder with advance pulse, green Rugged Infineon IGBT Module Inverter Digital Infineon Microprocessor Industrial 60% Duty Cycle at 250 Amps AC/DC TIG/ DC Stick functions Solid State HF or Lift TIG start Pulse up to 500 Hz DC; 250 Hz AC Advanced Square, Soft Square, Triangular, and Sine wave forms Adjustable Arc force and Hot Start 9 programmable channels to save favorite settings Advanced AC Pulse