5pcs N52 15x3mm 4mm Hole Strong Round Countersunk Ring Magnets Rare Earth Neodymium Magnets

Description: 5pcs N52 15x3mm Strong Round Countersunk Ring Magnets 4mm Hole Rare Earth Neodymium Magnet Specification: Shape: Disc Round Magnetic face: 15mm x 3mm (Dia. * Thickness ) Hole Dia. : 4mm Plating: Ni-Cu-Ni ( Nickel ) Material: NdFeB Grade:N52 Color: Silver Quantity: 5pcs Applications: 1, Acoustic field: the speaker, receiver, microphone, alarm, stage audio, car audio and so on. 2, Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, meter, sound meter, a reed switch, sensors. 3, Electrical field: VCM, CD / DVD-ROM, generators, motors, servo motors, micro-motors, motors, vibration motors. 4, Machinery and equipment: magnetic separation, magnetic machinery. 5, Other industries: magnetized Wax, pipe descaling, magnetic fixture, automatic mahjong machine, magnetic locks, doors and windows magnetic, magnetic luggage, leather magnetic toys, magnetic tools, gifts and packaging. 6, Can also be used to extend protected lithium batteries with recessed contact points. 7, Electrically conductive (making them suitable to extend recessed batteries). 8, Perfect for sticking notes on fridge doors. 9, Great for DIY projects. Tip: 1, Strong magnets should Keep away from Ironware and some easily magnetized iron products, such as monitors, bank cards, computers, televisions, mobile phones and other 2, Strong magnets should be stored in a dry, heated environment, and need to use of plastic, wood, cardboard, foam to separated and wrapped. 3, Magnets might affect water meter ,electric meter, gas meter and some metering equipment exist some inaccurate affect (Such as : if magnets placed near the meter, the meter will slow down) Package Included: 1x Pack (5pcs) Neodymium Magnets