... Grades, Sizes, Coatings and Shapes. Warmly welcome your inquiries!NdFeB magnet is made from Neodymium, Iron, Boron and some other transitive ... to make it strong.1. General features of the NdFeB magnet:NdFeB Magnet Grades: N33, N35, N38, N40, N42, N48, N50, N52 ... Magnetic separators, automatic mahjong machines Toys and other industries and etc.If you are interested in this magnet, please contact me at ...