XtremeLite Premium High Beam Headlights H7 6,000K Xenon HID Kits - 2005 Mercedes-Benz C-Class Composite Plug-'n-Play - installs in 20 minutes or less (no wire-cutting or special skills required); Fits into existing headlights or fog lights, no modification or retrofitting required 100% Water-proof, 100% Dust-proof, 100% Shock-proof This Premium Digital Dual-Core HID Conversion Kit comes with 2 Dual-Core Ballast, 2 Bulbs, Mounting Brackets, Zip Ties, Hardware, and Installation Schematic Brighter driving vision at night; 3 times brighter than halogen bulbs Bulb Lifespan of 3 to 5 years; Safe for headlight and fog light, won't melt the housing, runs cooler than stock halogen bulbs