Putco LED stick bulbs are simple to install and replace stock bulbs. They are 18X brighter than factory lighting with 100 lumen LED's. Their super-low voltage consumption makes for a long life exceeding 50,000 hours. The B-Type Bulbs have 360 degree light projection, while the T-Type Bulbs have single point projection. Today's hottest lighting trend in the automotive industry is LED's. LED bulbs produce a brighter, cleaner and more attractive light than factory incandescent bulbs.