Ceramic Disc Magnets Dia 5/8 Diameter x 3/8 inch - for Crafting Fridges Refrigerators Science and Hobbies Magnetic Therapy. Hard Ferrite Disc Magnet - Bulk Package of 100

This high-quality ceramic magnet measures 5/8" in diameter and 3/8" in thickness and is made of a grade 8 ceramic magnetic material and is capable of holding up to 1.8 pounds under ideal conditions. While not quite as powerful as neodymium magnets, ceramic magnets are an economic solution for applications in which neodymium magnets are either too strong, too expensive, or under environmental conditions that are not ideal. Because of their extremely brittle nature, caution should be exercised when handling these magnets because they can expel shards if they are allowed to snap together or inadvertently slam against a magnetic surface.