****Free shipping to any U.S address**** Dialarc 250 AC/DC provides current control range and AC/DC operation make an effective combination for production line work, plant maintenance, garages and job shops. Simply dial in the desired setting on the unit's electrical amperage control and you're ready to start welding. The straight forward operation makes the Dialarc 250 AC/DC a natural choice for vocational training schools.The Dialarc 250P AC/DC offers more economical operation with built-in power factor correction for lower primary power demand.