5pcs/set Super-strong Circular Magnet 30x5mm Heavy Rare Earth with Holes Is Suitable for DIY Office and Industrial Use.

Shape: round Size: 30mm x 5mm hole 5mm Grade: N35 Electroplating: nickel+copper+nickel three-layer electroplating. Maximum operating temperature: 80C/176F note: 1. Large neodymium magnets are very strong and must be handled carefully to avoid personal injury and magnet damage. Fingers and other body parts may be severely caught by two magnets that attract each other. It is fragile, please be careful. 2. Never place neodymium magnets near electronic equipment. 3. Neodymium magnets are fragile. If they collide with each other hard, they may peel off, crack or smash. 4. If it is heated above 80 C/176 F, the neodymium magnet will lose its magnetism. Packing: 5pcs