Kensun HID Xenon Conversion Kit with Premium Ballasts - H4 (HB2) (9003) Lo/Hi Halogen (Low-Beam Xenon/ High-Beam Halogen) - 10000k Simple installation - in 20 minutes or less (no wire-cutting or special skills required) 100% Water-proof, 100% Dust-proof, 100% Shock-proof Included in kit: 2 premium ballasts, 2 bulbs, Installation instructions, Smart aluminum carry-case Lo/Hi Halogen Bulb means the low beam is HID Xenon and the high beam is a regular halogen bulb. If you would like HID Xenon for high-beam also, you will need a Kensun Bi-Xenon Conversion Kit. Produces 2 to 3 times as much light as a halogen bulb