... 3.coating:ni-cu-ni 4.meet:ISO9001:2000 , CTI Test block NdFeB magnetMagnet(NdFeB magnet) is made from Neodymium,Iron,Boron ... , and etc.Sizes: according to your requirementsShapes: disc, cylinder, sphere, block ,ring ,tile, arc, and etc.High magnetic performance (Br: 11 ...