hid slim ballast,hid ballast, thin ballast, 12V/35W, 12V/50W, 24V/35W, 24V/ ... , AC ballast is steady and DC one is supplied too. HID feature:Input voltage: 9~18V DCWorking current: 3.5AWorking temperature ... , which are ordinary ballst and thin ballast, can match with HID BULB from different Factory. hid kit,hid xenon kit,hid ballasts