... 5*5*2mm 4.Coatings:nickle permanent magnetic Magnet(NdFeB magnet) is made from Neodymium,Iron,Boron ... block ,ring ,tile, arc, and etc.High magnetic performance (Br: 11,000 to 14,500 Gs,Hci ... degrees C Products Technology: Applications: NdFeB Magnet are widely used in computers(voice coil motor ... optical disk drive), mobile phones, wind generator, magnetic resonance image, Hi-Fi system, auto motors, etc ...