Everlast PT210EXT 210-AMP Digital PULSE AC DC Tig Stick Welder with IGBT Technology Microprocessor control offers precise management of welding parameters and functions Wave form control offers 3 types of wave form for AC welding: Sine Wave, Advanced Square Wave, and Soft Square Wave Offers programmable Stick functions which include hot start time, hot start intensity and arc force control Siemens IGBT TECHNOLOGY - Offers standard type pulse feature for AC and DC, and a special Advanced Pulse for AC for welding thin material, increasing travel speed and reduces warping Ideal for generator use with a Power Factor Correction (PFC) of greater than 99-Percent