• Water Resistance • Grade: N42 • Max Working Temperature: 80°C/176°F • Tolerance: Apporx 0-0.4mm • Plating: Nickel + Copper + Nickel Triple Layer Plated • Disc Magnet high strength • NdFeB high quality product • Corrosion free coating • Applicable multiple purposes • Condition:100% Brand new and high qua • Magnetizing direction: N-S-pole in the two largest surface • Note: the bar magnets are very fragile. It is forbidden to collide with other metal objects (including other magnets), so be careful when trying to separate them