... : Ni,Zn,Au,CU,Chrome,.. Shape: disc, cylinder, block, cube, ball, ringGrades: N35, N38, N40, N42, N48, N50, N52, N35H, N38H ... customize various shapes of Neodymium magnet.Neodymium magnet (block disc, ring, arc segment, or other special shapes) according to customers' requests ...