100Pcs 20x3mm Neodymium Magnet with 3mm Hole NdFeB Super Strong Craft Countersunk Round Ring Magnets

Descriptions
100Pcs Neodymium Magnet 20x3mm NdFeB Super Strong Craft Countersunk Round Ring MagnetsSpecifications
Shape:Round
Material:NdFeB magnet
Size(DX H):20mm x 3mm
Hole Dimeter:3mm
Quantity:100pcs
Features
– Neodymium (chemical symbol Nd) is element 60 on the periodic table. It is a rare earth metal and forms one of the Lanthanides series. When added to Iron (Fe) and Boron (B) (chemical formula Nd14Fe21B) the resultant magnets are the Strongest magnets currently available.
– Neodymium magnets are sometimes known as Neo, Neod or NIB magnets.
– Neodymium magnets are usually coated Nickel-Copper-Nickel plating to prevent the iron from rusting.
– Neodymium block magnet was made of NdFeB, have strong magnetic performances and appearance does not rust, usually placed in room temperature, the maximum operating temperature is 80 °C , and it never will demagnetization.
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:, CD / DVD-ROM, generators, motors, servo motors, micro-motors, motors, vibration motors.
4.Machinery and Equipment:magnetic separation, magnetic machinery.
5.Healthcare:medical equipment, magnetic health products and so on.
6.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.
Package Included
100Pcs x magnets