Neodymium “NIB” magnets are very powerful magnets. They are so powerful that even a small magnet can lift over 10 kilos of mass and a bigger one has more than 30 cm of magnetic fields. They can easily bruise fingers and even break finger bones when they attempt to connect together. These magnets are made from a combination of neodymium, iron and boron (Nd2Fe14B). They are used as angular head motors in computer hard drives and as transducers in some earphones.
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