1.Materials: Neodymium-Iron-Boron 2.1/2" x 1/4" x 1/8" ... :2000, SGS, CTI... Magnet(NdFeB magnet) is made from Neodymium,Iron,Boron and some other transitive metallic elements to make it ... , and etc.Sizes: according to your requirementsShapes: disc, cylinder, sphere, block ,ring ,tile, arc, and etc.High magnetic performance (Br: 11 ...