【DURABILITY】: Made under ISO 9001 Quality Systems so the highest quality available! Ceramic Industrial Magnets has high demagnetization resistance, corrosion resistance and oxidation resistance, so it is the most widely used permanent magnet material at present. 【ANTI-SCRATCHING DESIGN】These small round magnets disc are designed with beveled edges, which can prevent surfaces of refrigerator from scratching. 【MULTIFUNCTION】Strong ceramic magnets can be use as refrigerator magnets, whiteboard magnets, billboard magnets and everything has magnetic, also can help storage things, it’s super useful for home and office. 【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 (eg 3inch, 4inch, 5inch, etc.), please search for DIYMAG brand. DIYMAG provides professional design and consultation service according to customers’ requirements.