The 21 LED White Ceramic Tower 3157 Bulb is a practical and efficient lighting solution. Sold as a pair, it features 21 LED diodes and is available in white. The built-in ceramic heat sink helps prevent overheating, ensuring a longer lifespan. It is also multi-voltage, compatible with 12-24 volts. This bulb is a reliable and energy-efficient option for any vehicle or lighting application.