Specification Brand : Apex Magnets BulletPoint1 : Includes 30 Disc Magnets BulletPoint2 : Material: Neodymium (NdFeB) BulletPoint3 : Grade: N48 BulletPoint4 : Coating: Nickel (Ni) BulletPoint5 : Pull Force: 1.4 pounds Color : 100PCS N52 CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier : 8799577207760 ExternallyAssignedProductIdentifier1 : 0656382807401 ExternallyAssignedProductIdentifier2 : 656382807401 ExternallyAssignedProductIdentifier3 : 00095421003952 IncludedComponents : 30 9mm x 1mm Disc Magnets ItemName : 9mm x 1mm Disc - Neodymium Magnet ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : industrial-rare-earth-magnets ItemVolume : 576 fluid_ounces Manufacturer : Apex Magnets Material : Neodymium ModelName : 5143U0-120 ModelNumber : SICARO NumberOfBoxes : 1 NumberOfItems : 30 NumberOfPieces : 30 PackageLevel : unit PartNumber : M9x1MMDI ProductDescription : Description Material: Industrial Magnets / Rare Earth Magnets/ Neodymium magnet Plating: Ni-Cu-Ni (Nickel) Tolerance: 0~1mm Maximum Operating Temperature: 80 degrees / 176 degrees Fahrenheit Unit Size: Millimeter (mm.) 1mm=0.0394inch Warning: 1. NdFeB magnets are sold by size and measured in millimeters, please pay attention to the size. 2. Due to the special characteristics of magnets and manual measurement, there may be an error of 1mm or less. 3. Related electronic products, such as mechanical watches, bank cards, cell phones, computers, TVs, pacemakers, etc., are easily affected by neodymium magnets, so please keep a certain distance from them to avoid unnecessary losses. 4. When connecting two magnets, slowly and gently bring them close to each other. NdFeB magnets are incredibly magnetic, please be careful not to hurt your hands when using them. 5. NdFeB magnets are fragile products, characterized by hard and brittle, especially large size products, strips and flakes, when separating the magnets, please be careful to stagger shift, do not break hard prying, so as to avoid damage to the product or injury, separate to maintain a certain distance, so as to avoid collision, damage to the product, or even danger. 6、NdFeB magnets are protected by coating on the surface, which has certain antirust and corrosion properties, but if not used in time, it must be kept away from high temperature and corrosive environments.