Upgrade your car or truck's lighting system with our #921 miniature bulbs. These bulbs operate on 12V and emit 21CP of light, providing bright and clear illumination for your vehicle. Designed with T-5 technology, these bulbs are built to last. They come in a box of 10, making them the perfect purchase for drivers who want to have spares on hand. Don't compromise on safety and visibility - choose our #921 bulbs for your automotive lighting needs.