75 Pcs Round Ceramic Magnets:The strong adhesive magnets manufactured according to the ISO 9001 quality standard are of high quality, resistant to demagnetization and oxidation.Diameter is 25mm(0.98"), thickness is 5mm(0.2"). Crafts magnets easy to use:Stick on magnets with adhesive meet your different needs. Anti-scratching Design: These small round magnets disc with beveled edges can prevent surfaces from scratching. People widely use our button magnets for home and office ,strong crafts magnets are also perfect for wall decoration, photo wall, display board adsorption, kitchen cabinets, refrigerator stickers,Scientific projects, arts, and DIY crafts, or classrooms. Note: Please keep your kids away from ceramic magnets, as they are not toys, only for art, science or production.