This set includes 11 SYLVANIA Blue Dot 25B FlashBulbs PRESS 25B Flash Bulbs for Camera. They are compatible with Sylvania cameras and were made in the United States. These vintage flash bulbs are perfect for collectors or anyone who wants to add a touch of nostalgia to their photography. The Model number for these bulbs is 25 & 25B, and they are sold as a set of 11. Use caution when handling them, as they are delicate.