General description Powerful Super Strong Neodymium Magnet designed for various DIY applications, including wall signs, fridges, and whiteboards. This set includes 20 square magnets, each measuring 10x10x4mm, making them perfect for a wide range of uses such as office organization, crafts, science projects, and hobbies. Technical specifications Type: Neodymium magnet Dimensions: 10x10x4mm Quantity: 20 pieces Usage Ideal for sticking to refrigerators, washing machines, office blackboards, and school lockers. Perfect for office supplies, crafts, science projects, and DIY projects. Can be secured in place with adhesive or pressed into holes drilled in wood or plastic. Other information Scratch Free Technology ensures that each magnet won't leave a single scratch on surfaces. Each magnet features a clean, sleek design made with new scratch-resistant technology. Available in various shapes including disc, pot, ring, rectangular, and rod.