Specifications: Made of NdFeB, have strong magnetic performances and appearance does not rust. Type: Magnet Material: NdFeB Grade: N52 Features: Cuboid, Strong Magnetism, Fridge Magnet Size: 20mm x 10mm x 5mm/0.79" x 0.39" x 0.20" (Approx.) Usage: Acoustic field: the speaker, receiver, microphone, alarm, stage audio, car audio and so on. Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, sound meter, a reed switch, sensors. Electrical field: VCM, CD / DVD-ROM, generators, motors, servo motors, micro-motors,motors, vibration motors. Machinery and equipment: magnetic separation, magnetic crane, magnetic machinery. Health Care: MRI scanners, medical equipment, magnetic health products and so on. Wedding corsage badges, etc., can be replaced with a magnet attracts ,every other clothes pins, so as not to damage the dress. Notes: Do not allow children to play with them unsupervisedly or they could get injured. Especially pay attention to the small magnets, please place in somewhere children cant reach. It should be cared when handling two magnets as they can pull together with such force that pieces of the magnets cansplinter off and cause injury. Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Magnet