... different Grades, Sizes, Coatings and Shapes. Warmly welcome your inquiries!NdFeB magnet is made from Neodymium, Iron, Boron and some other transitive ... elements to make it strong.1. General features of the NdFeB magnet:NdFeB Magnet Grades: N33, N35, N38, N40, N42, N48, N50, N52 ( ... , Ni-Cu-Ni, Zn, Ag, Au and other special platings and coatings Shape: arc, tile, square, cylinder and magnetic ring with ...