Excellent luminous super slim ballast H4 hi/lo HID xenon kits, 1.Energy Saving 2.Long ... 9001 Quality control system1. HID KIT/HID conversion kit/ HID xenon kit :The HID kit have 2 HID lamps,2 ballasts,installation ... installation manual card. 2. more information for hid kit and lamp Bulb TypeH1,H3,H4,H4(H/L),H7, ... warranty time is 18months Excellent luminous super slim ballast H4 high/low HID xenon kits