Super magnets are small polished magnets very strong made of hematite, they are used per pair. Once in your hands you will not separate any more! launch in the air and they meet themselves and in an incredible electric noise. Have fun to make them hold upright on a table or make them circulate between your fingers to evacuate the stress. Of a dark metal grey, they are really beautiful. Original, attractive, captivating and funny you will not weary yourself to handle them.