Check the listing for details. Power Step Up Step Down Transformer 100V to 120V. Condition: Used. Listed at 24.98 USD. Listed here is a Power Step Up Step Down Transformer 100V to 120V. This transformer was pulled from a piece of japanese lab equipment that could be switched between Japanese 100V power and American 120V power. The 120V switch position is connected to the yellow cable, and the red cable was 100V as I recall. This transformer was connected to a kind of power board and circuit breaker. I am unsure if it can be used just by itself without the other components. Also unsure if the 100V and 120V positions can be changed. You get the exact unit(s) seen in the pictures. RETURNS: Returns are accepted. SHIPPING: Shipping accepted to The Lower 48 U.S. States. NO shipping to APO Boxes, Hawaii or Alaska. The ONLY international shipping option accepted is Ebay International Shipping. No other international shipping is accepted, period. If for some reason an order is placed that does not meet these criteria, the order will be cancelled - no exception. I do my best to ship as soon as possible upon payment. I do my best to send items out within 3 business days - shipments tend to go out faster than that if I'm handing multiple orders within 24 hours. If the shipping and handling time on this listing is mentioned to be exceeding 3 business days, it can be assumed that I am currently away and that the S&H time will return to 3 days once I am back.