• High-quality neodymium magnets with a three-layer coating of nickel and copper for extra protection against corrosion. • Powerful magnetism ideal for holding notes, photos, and images with ease. • Compact design with dimensions of 8 mm in diameter and 3 mm in height. • Versatile for organizing tools, kitchen, office, school, or for DIY design projects and scientific experiments. • Includes a practical storage box for easy organization. • The set contains a total of 64 units.