If you plan to use these magnets every day, don't buy them. I've been using them on a magnetic distance learning whiteboard for about 20 minutes and they're already cracking and falling apart.
Magnetic Marble Diameter by Ajax Scientific: Unleash the Power of Attraction
3 Review
π¬ Revolutionary Filings Experiments by American Heritage Industries
3 Review
Iron Filings: Convenient 1lb Container for Easy Storage and Usage
3 Review
𧲠Discover the Powerful Magnetic Attraction of Horseshoe Magnet Mm Chrome Style
3 Review