12 Single use flash bulbs in the AG1B size. These are small blue ones with a press in base. So if you need the screw in kind, these are not for you! 12 bulbs in the original box. Each bulb is one time use. Not sure if these are the bulbs you need? Google your flash maker and model to find out!
As each bulb is one time use, and a small percentage of flash bulbs fail, as a matter of course, so I can't guarantee that each one will work. However, they are unused and intact.