... -1, H7, 9004-1, 9005, 9006, 9007-1, with 2 ballasts and installationclamps.HID bulb Hi-lo Beam : H4-2, 9004 ... can switch between high beam and low beam,with 2 ballasts and installation clamps.HID bulb Bi-xenon : H4-4, 9004 ... each bulb, which works for high and lowbeam, with 4 ballasts and installation clamps. HID Bulb, HID Xenon Bulb, Xenon HID ...