LED bulb size: 51 mm (length) * 16 mm (base diameter), with high-brightness 5630 33SMD LED, brighter than ordinary incandescent bulbs. Long lifespan of approximately 50,000 hours. Suitable for: 1157 BAY15D 7528, 1016, 1034, 1157A, 1178A, 1196, 2057, 2057A, 2357, 2357A, 2357NA, 2397, 3496, 94. Applies to interior and exterior automotive parts of most cars, SUVs, vans, motorcycles, scooters, trailers, or trucks. Turn Signals: Front and rear turn signals and caravan bulbs for motorhomes. The outer casing is made of aluminum, which is good for heat dissipation. Lights up instantly, effectively preventing rear-end collisions. Easy to install, no need to change the original vehicle's wiring, plug and play. High-quality SMD LEDs: Each bulb has 33 high-quality 5630 LED chips, which can withstand vibrations and shocks. The 360-degree full-angle light provides an amazing emitted light effect. IP68 waterproof rating: No dark spots or shaded areas, perfect performance in poor visibility