This is a high-power educational and utility permanent magnet. Keep this product safely away from pacemakers, magnetic storage media (such as hard drives and credit cards), and sensitive electronic testing equipment to avoid data loss or component damage. Always store the magnet with a steel keeper plate attached across the poles when not in use to close the magnetic circuit, shield the surrounding environment, and preserve its full field strength for future school terms

Ceramic magnets are made of a brittle material similar to pottery. They can chip, crack, or shatter if they are allowed to slam violently together or drop onto hard concrete floors. Handle them with care during classroom practicals. Keep this set safely away from pacemakers, computer hard drives, credit cards, and sensitive electronic testing meters. Store them stacked neatly in a dry storage box away from strong neodymium magnets to preserve their natural polarity.