Apex 9004 ( HB1 ) Single Beams Xenon Two Hid Bulbs ( 1 Pair ) ( 8k 8000k Bright Blue ) " All Bulb Sizes and Colors " Compatible with both 35 watt and 55w / 55 watts ballasts Apex Xenon Hid Bulbs ( pair ) comes with 1-years Manufacturer's warranty / High quality Bulbs Xenon Hid bulbs are 3 times brighter compared to stock halogen bulbs. Compatible with both 35w & 55w Hid Lights Kits. We have various color bulbs all in stock please click the correct bulb size and color in the drop down menu Built to last more then the regular stock halogen bulbs ! while consuming less power input then the stock bulbs Comes with 2 bulbs ( 1 pair ) as a promotion we are also including wiring harness for free compatible with both Ac 35w / 55w and DC type ballasts as well !