Excellent Magnetic Coating: Triple nickel copper nickel (NiCuNi) coating;This gives the viscous magnet a smooth surface to better resist stress and external interventions.Durable and high quality;: made with science and technology according to quality system.ISO 9001.Strong Magnets: The grip is incredible and the attraction of each magnet is no less;3.1 kilograms, which can be touched and thrown directly.of axial magnetization, and their bonding surfaces are located at the magnetic south pole and the magnetic north pole.For example, if you need to magnetically connect 2 slime magnets, that's very useful!Versatility: It has a wide range of uses, from simply placing items in the refrigerator to decorative and creative items used for crafts, most industrial, home, scientific and office uses.The attractiveness and adhesion are strong and high.Please note that this is not a toy!Size: 40 piecesNeodymium Magnets Our neodymium magnets are commonly used in creative applications such as theater models and designs, furniture manufacturing, exhibition stands and packaging.They also have many uses in engineering and manufacturing where compact size and maximum strength are required.Furthermore, because they are resistant to demagnetization, they are very suitable for depreciation or grave;damping when used to repel other magnets.Uses: home decoration, industrial equipment, electronics, healthcare, jewelry, automotive, art and power amplifiers;crafts, hobbies and science projects, etc.Magnet Specification: Color: Silver Size: 20X10X2mm Number of Magnets: 40 Material: Neodymium Iron Boron MagnetNote: not suitable for children.Children accidentally inhale or swallow small objects, there is a risk of choking or suffocation.It's not a toy.This can damage watches, televisions, computer screens, cell phone pacemakers, and credit cards.After-sales service: If you have any questions about packaging or magnets, please contact us.We will solve the problem in time!