The 21 LED Amber Ceramic Tower 3156 Bulb is a practical and reliable lighting solution. With its 21 LED diodes, it provides a bright and efficient amber 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 helps prevent overheating, ensuring a longer lifespan. This bulb is a reliable choice for anyone seeking a durable and energy-efficient lighting option.