Quartet® Glass Magnets, Large, Clear, 0.45" Diameter, 6/Pack

Magnets allow you to take advantage of all the features of any magnetic whiteboard, and are the only magnets that are compatible with a magnetic, glass marker board. Extra strong, these magnets hold more sheets than a standard magnet.
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Large magnets are extremely strong and able to securely hold a number of items on the surface of any magnetic, glass whiteboard or other marker board. Use the magnets to display photos, reference materials or anything else that you need to see at eye-level. Made of neodymium, the magnets can secure up to six pieces of paper on a magnetic glass whiteboard, and up to 15 on a standard surface whiteboard.