SDX Extra Bright HID Xenon AC Conversion Kit - 9004 (HB1) Bi-Xenon - 10000K - 2 Bulbs & 2 Ballasts Ultra Bright 3600 Lumen Fused-Quartz Xenon Bulb: Produces 5X brighter light than halogen, uses up to 80% less power, increases visibility, and made to last with a 3000+ hour non-fading lifetime SDX Ballast: 35w Alloy Slim Ballast: Super bright 3100 lumen performance, reduced flickering with non-cycling technology Easy to Use Plug-and Play with QuickSnap connectors. Can be installed on any compatible vehicle (some cars may require professional installation). Not all applicable vehicles are included in compatibility list, check Sylvania's website to ensure correct bulb size Ballasts are 100% Water-proof, 100% Dust-proof, 100% Shock-proof. These quality ballasts will stick around for the long run. Kit Includes: 2 SDX HID Xenon Bulbs (On Low/Hi-Halogen the high beam is still halogen, On Bi-Xenon both low and high beams are Xenon), 2 SDX 35w Standard Power Ballasts, 2 Sets of Universal Mounting Brackets, Complete Easy-to-Use installation instruction manual