Office Depot Brand Neodymium Magnets, Silver, 0.39in, Pack of 18

Magnets made of Neodymium are far stronger than standard ferrite magnets. Their hold is considered "permanent" because of their magnetic field strength. This makes them a preferred choice for commercial purposes, and an excellent option for everyday home, school and office uses. Even the smallest sizes of these magnets form a very secure hold. Super-strong design holds documents and photos securely on magnetic whiteboards and any smooth metal surface. Small size wonT interfere with your images or content.