Upgrade your vehicle's lighting with the 21 LED Red Ceramic Tower 3156 Bulb. This pair of bulbs features 21 LED diodes, providing a bright and long-lasting red light. The built-in ceramic heat sink helps prevent overheating, ensuring a reliable and durable performance. Suitable for a wide range of vehicles, these bulbs are multi-voltage, operating at 12-24 volts. Enhance your visibility and safety on the road with this practical and efficient lighting solution.