●Worlds Strongest Magnets: Small magnet size: Diameter 0.4 inch (10 mm) thickness 0.08 inch (2 mm), beautifully packaged for easy storage and 50 pieces per box ●Excellent Quality: The surface of the neodymium magnet is a triple layer coating of nickel-plated, copper and nickel. Magnetic strong double sided, anti-rust and anti-corrosion, smooth surface, strong and durable, long life ●✅【Suitable for Various Occasions】These thin disc magnets are strong refrigerator magnets, arts and crafts, DIY projects, hanging spice jars, photos, whiteboards, garage tools, school science classrooms, super strong, small and versatile round magnets ●How to Use: Rare earth magnets are made of fragile material. Do not strike or crash the two magnets. Neodymium disc magnet working temperature should not exceed 176°F (80°C), and if used properly, it will last a lifetime ●Quality Assurance: We are very confident in the quality of our products, and we are sure you will love this small but strong magnet. If you have any questions, please contact our customer service at any time, we will give you a satisfactory answer,MAYDIYCI