XENTEC H1 6000K Advanced Slim Alloy Ballast HID Xenon Kit (Cool White) HID Xenon Bulb: super bright 3500 lumen Xenon bulb: Produces up to 3x brighter light then halogen, 35% less power consumption, improve visibility, up to 5000-hour life expectancy Ballast: 35w Alloy Slim Ballast: Super bright 3100 lumen performance, reduced flickering technology Installation: Plug-and Play connectors. Can be installed on all compatible vehicle. please refer to Sylvania's website and check the existing halogen bulb to ensure correct bulb size 100% Water, shock resistance, Each Kit Includes: 2 HID H1 Xenon Bulbs; 2 xentec 35w Alloy Slim Ballasts