This high-output, high-intensity litespan LED is an easily installed replacement for your halogen Mr16 lights. Led's operate at a lower temperature and power load than halogen with an average 25,000 hours of use. This miniature LED reflector bulb produces 400 lumens from its 12 Volt 7 Watt 6 LED output with a bright white 4000K color output. Their concentrated beam angle of 20 degree puts more light down the road in front of you for true driving light capability. These die cast chrome universal LED lights are 3 3/4" long with a 2 3/8" diameter that can mount to existing light bars with their 8mm mount.