Durable Halogen Headlight: This headlight uses a halogen light source for bright illumination. High Wattage: With 25 watts of power, this headlight provides intense illumination. Compact Design: The headlight is designed to fit securely on your vehicle. Long Lasting: The halogen bulb provides long lasting illumination for your driving needs. Easy Installation: This headlight can be installed easily with no tools required. THIS IS FOR ONE BULB 6V HEADLIGHT HALOGEN H4 BULB! 50% BRIGHTER THAN STOCK INCANDESCENT BULBS! 25/25W - WILL NOT OVERHEAT STOCK WIRING! THIS IS FOR A ONE H4 HALOGEN HI/LOW HEADLIGHT BULB. THIS IS A 25/25W BULB AND WILL PLUG RIGHT INTO YOUR STOCK WIRING HARNESS WITHOUT ANY MODIFICATIONS NEEDED. THESE ARE MUCH BRIGHTER THAN THE INCANDESCENT STOCK BULBS. I HAVE H4 LAMP HOUSINGS LISTED IN MY STORE ALSO!