LED bulb size: 51mm (length) * 16mm (base diameter), with high brightness 5630 33SMD LED, brighter than ordinary incandescent bulbs. Long life and lasts about 50,000 hours. Suitable for: 1157 BAY15D 7528, 1016, 1034, 1157A, 1178A, 1196, 2057, 2057A, 2357, 2357A, 2357NA, 2397, 3496, 94.< /p> Applies to interior and exterior auto parts of most cars, SUVs, vans, motorcycles, scooters, trailers or trucks. Interior RV brake lights and bulbs. The outer casing is made of aluminum, which is good for heat dissipation. Lights up without delay, effectively preventing rear events. Easy to install, no need to change the route of the original car, plug and play.