DescriptionOrigin : Mainland ChinaShape: discSize: 5X2Tolerance:+- 0-2mmMaterial: Nd-Fe-B magnetGrade: N35BR: 14000-14500 GaussHcj12KOeHcb10.8KOeBHmax:48-51MGOEeMaximum operating temperature: 80 C/176 FPlating: three layers of nickel+copper+nickelFeatures: Super strong rare-earth neodymium magnet - once attracted to each other, it is difficult to separate. It is very suitable for wind turbines, DIY projects, scientific projects, etc.Attention: strong magnet is fragile; Strong magnets will severely squeeze your fingers; If you let two magnets attract together, it may crack and the debris may hurt your eyes.(At 20 C, test the tension on a polished iron plate with a thickness of 20 mm. Subtract the magnet vertically. In special cases, the difference from the specified value may be as high as - 10%.)Note:1: Neodymium magnet is very powerful. Please pay attention to your fingers or other body parts to avoid injury between two large magnets2: Neodymium magnet is very fragile and easy to be damaged. Please handle it carefully. Strong magnets are made of rare earths at high temperatures, which cannot guarantee 100% perfection. Its small defects will not affect its performance and use.3: Strong magnets should be kept away from iron and some iron products that are easy to be magnetized, such as monitors, bank cards, computers, televisions and mobile phones4: It is forbidden for children under 8 years old to touch and use it to prevent children from swallowing