... .Materials: Neodymium-Iron-Boron 2.Shape: Disc,Disk,Stick,etc... 3.Certificate: TS16949 / ISO2008 NdFeB Disc Magnet:- N35-N52, N48M, N48H, N45SH ... motors, Servo motors, Linear motors, VCM, MRI, Loudspeakers, Linear actuators, drives, toys, bags, household appliances, microphone parts, transmission equipments...Remarks:1 ...