【DURABILITY】The ceramic industrial magnets are made of high grade magnets and manufactured according to the quality standard, resistant to demagnetization and oxidation.Diameter is 18mm(0.71"), thickness is 3mm(0.12"). 【ANTI-SCRATCHING DESIGN 】These small round magnets disc designed with beveled edges, which can prevent leaving scratches on the surface of the refrigerator, office board or elsewhere. 【MULTIFUNCTION】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. 【CONVENIENT TO USE】 Each pack of magnets comes with a corresponding number of double-sided adhesive tapes that you can use when you need them, suitable for a variety of application scenarios. 【 VARIOUS SIZES 】If you need to buy more sizes of magnets, please search for DIYMAG brand. D