Features: Equipped with digital screen and relative control for both output voltage and power percentage. And the output current is 0-12 V adjustable. The Power Box uses high frequency pulses that actually moves the metal at a molecular level to stiffen and strengthen the metal. The Power Box is used to stabilize steel and aluminum panels where the metal is stretched. With a combination of using traditional paintless dent repairing methods and The Power Box youll be able to save stretched metal (oil cans) and save the panel from being painted on steel and aluminum, of varying types of damage. This device is designed specifically to be used with dents on flexible steel car bodies, removing dents like the kind caused by impact from hailstones, which leave smooth, rounded dents, can beremoved. It is a kind of convenient and professional tool, which is specially designed for professional paintless dent repairing workers, which can save time during a repairing process.