5Pcs 1.97x0.39x0.12-0.2inch N35 NdFeB Round hole Magnet Super Powerful Neodymium Magnets Strong Permanent Magnetic imanes Disc 50x10x3-5mm Refrigerator Magnet

OverviewAcoustic 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.  Studio:bulk magnet can be used to adsorb screws and other parts, even wrenches and other tools.