... Test magnetic NdFeB disk Magnet(NdFeB magnet) is made from Neodymium,Iron,Boron and some other transitive ... -Ni, Zn, white-blue Zn, Epoxy, Gold, and etc.Sizes: according to your requirementsShapes: disc, cylinder, ... sphere, block ,ring ,tile, arc, and etc.High magnetic performance (Br: 11,000 to ... hard disc drive, pick-up of optical disk drive), mobile phones, wind generator, magnetic ...