... luminous super slim ballast H4 hi/lo HID xenon kits, 1.Energy Saving 2.Long life 3.High brightness ... be used for Automobile,LCD screen,Home appliance Equipment ,motorcycle,game machine,alarm systerm and so on4)Strict quality ... The HID kit have 2 HID lamps,2 ballasts,installation accessories and installation manual card. 2. more information for hid kit ... super slim ballast H4 high/low HID xenon kits