The Xtreme Yellow bulbs help to improve visibility under fog, hail and raini conditions due to reduced color temperature for less reflection. The perfect bulb for performance-oriented drivers who aim for additional safety time and comfort when driving. Produce a crisp yellow light from a bulb that is manufactured to the most precise measurements to provide the exact amount of light needed on the road. The ideal bulbs for professionals who travel in rural areas and all terrain. Off-road use only.