A halogen bulb describes a tungsten filament surrounded by a mixture of inert gas and a small amount of a halogen (a highly reactive gas). Halogen bulbs are very bright and have a long lifespan. Some halogen bulbs care deigned to replace incandescent bulbs. Others are specifically for 12 volt fixtures. Our halogen bulbs are available in a variety of price ranges, including: $0-$25, $25-$50, $50-$75, $75-$100, and more. We hand select our halogen bulbs from top-of-the-line manufacturers, ensuring their initial quality and long term durability.