The 21 LED Red Ceramic Tower 3157 Bulb is a practical and reliable lighting solution. With 21 LED diodes, it emits a vibrant red light. Sold as a pair, this bulb is suitable for various vehicles and operates on a multi-voltage range of 12-24 volts. Its built-in ceramic heat sink prevents overheating, ensuring long-lasting performance. This product is an excellent choice for those seeking a durable and energy-efficient lighting option.