Fridge Magnets The size of the strong black magnet 12 * 16 mm, they are small magnets, but the magnetic force is very good. Don't worry about the magnet problem, they can be used normally. Comes in a pack of 31. High-quality material The strong magnetic nail consists of a metal shell and an extra strong neodymium magnet. Three-alloy coating, anti-rust and anti-corrosion, smooth surface, strong and durable, long service life, mini magnets will not lose their attractiveness over time. Powerful functions The main function of the magnetic refrigerator is to attach papers, photos or hang small objects. They are easy to attach to magnetic surfaces such as refrigerators, whiteboards or other metal surfaces. Multi-Utility Fridge magnets are a very practical gadget, they are easy to use, portable and can be used in many different applications. There is no need to use glue or other adhesives and it leaves no marks or stains when applied. For example, refrigerators, magnetic whiteboards, bulletin boards, iron doors, iron frames, offices, etc.