... D15*d5*8mm; 4. coating:Ni; 5.magnetization: axial rare earth magnets, neodymium magnet, magnetic material, Neodymium magnet, NeFeB magnet, permanent ... : 100pcsremarks: other size and shape customs General informatin of rare earth magnets:1.Shape:ring, cylinder, block, arc, ladder and ... any typ with hole.2. Size limitation: 2" max in magnetized direction 5" ...