ES150i PRO – A robust and durable Stick/Lift TIG power source for the professional welder. The machine provides state-of-the-art welding performance and reliability through use of the latest high performance power electronics and digital control; ensuring a precise consistent arc. This machine provides a smooth DC (Direct Current) welding power which allows you to weld a variety metals, such as alloyed and non alloyed steel, stainless steel, and cast iron. The Arc Force and Hot Start settings are adjustable and help the user find exactly the right arc for the job.