【High-quality material】：The metal plate is made of high-quality galvanized iron sheet.The discs are covered with official 3M double-sided adhesive, which does not come off easily and ensures a longer fixation. 🌟【Product features】：There are 25 metal plates for magnets, the round metal plates have a diameter of 20mm and a thickness of 0.2mm. This magnetic sticker replacement is not inherently magnetic and must be used with a magnet. 【Good adhesion and invisible】：The thin, only 0.5 mm thick metal plate can be attached invisibly to the smartphone cover from the inside.For optimal fixation, we offer you a high-quality, strong adhesive.The metal plate sticker is made of double-sided 3M adhesive, which is not easy to peel off and ensures a longer fixation. 🌟【Easy to use】：Simply stick the metal plate magnet on the back of the object, on the back or inside the phone case.It can be easily removed and wiped clean without leaving any residue when replacing. 【Wide range of applications】：Metal plates can serve as a secure holder for plasticine figures.The metal plates can also be used as magnetic attachments for clay holders, packaging or folder attachments or for crafts.You can easily attach the metal plate to the back of your phone;You can also attach the metal plate directly to the back of your phone or to the inside of your phone case.