powerful neodymium magnet--ring 1.high magnetic surplus 2.high coercitive ... neodymium magnet--ringShape: Arc(segmet), Block, Cube, Cylinder, Disc, Ring, Rod, SphereNormal grade: N35-N50, N35M-N48M, N33H-N45H ... , NiCuNi, Au, PassivationWe also produce according to customer's design and provide excellent technical support for new project.Application ... Car motors and so on. powerful neodymium magnet--ring