HELLA 009094331 Rallye 4000i Compact Series 12V/35W Xenon Driving Beam Lamp with Internal Ballast The same features as our rugged and dependable Rallye 4000 Xenon Series now with an internally mounted ballast and 25% smaller housing for the ultimate in mounting flexibility Designed for use by motorsports professionals, the Rallye 4000I Compact Xenon puts 50,000 Volts of lighting power at your fingertips 6.60 inch high x 6.7 inch wide x 5.40 inch diameter Single Lamp includes one Rallye 4000I Compact Xenon driving lamp, one D1S 35W Xenon capsule, one internal ballast, wiring harness, relay, and mounting hardware One Year Limited Warranty