Applications: Acoustic field: the speaker, receiver, microphone, alarm, stage audio, car audio and so on. Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, 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. Healthcare: MRI scanners, medical equipment, magnetic health products and so on. Other industries: magnetized Wax, pipe decaling, magnetic fixture, automatic mahjong machine, magnetic locks, doors and window magnetic, magnetic luggage, leather magnetic toys, magnetic tools, gifts and packaging. Neodymium block magnet is very popular for its cost-effective. The permanent magnet material based on the inter metallic compound Nd2Fe14B make it has good mechanical properties. At the same time, the chemical composition in the production process is adjusted and the surface coating treatment method is adopted to make it more applicable Description Made of the Highest Quality Neodymium Rare Earth Magnets, Using State of the Art Manufacturing Technology Grade N, with an Extremely Strong Pulling Force Great Item for Nail Polish, Shower Door Magnet, Shower Curtain Magnets, and Magnetic Stud Finder Magnetized Through Thickness, the Surfaces. Nickel-Copper-Nickel Triple Layer Coated for Superior Durability Round magnets, fridge magnets refrigerator magnets, crafts, whiteboards, DIY projects, office magnets, rectangular magnets, Worked well for Come-on Project! DIY PROJECTS & SCIENCE EXPERIMENTS - Refrigerator Magnets, Shower Door, Work or Office, Scientific Purposes, Arts and Crafts or School Classroom. Used for purse clasps. Excellent little magnets!