These countersunk super strong magnet rings can be used for a wide range of applications. Neodymium magnets are made of a brittle material. These magnets are not as strong as steel. They are more like ceramic. If you let two magnets slam together, they can crack and break. This is true for magnets large and small. These magnets are very powerful which should be handled with great care. Without parents supervised do not allow children to playing magnets as they could get injured.
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