Kensun HID Xenon Conversion Kit with "Slim" Digital Ballasts - 9006 (HB4) - 4300k Plug-'n-Play - installs 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 Slim digital ballasts, 2 HID bulbs Superb night-time visibility Produces 2 to 3 times as much light as a halogen bulb