... Disc,Disk,Stick,etc... 3.Certificate: TS16949 / ISO2008 NdFeB Disc Magnet:- N35-N52, N48M, N48H, N45SH, N38UH, N35EH...- Max temperature: ... . NdFeB Permanent Magnets with different grades of: N35, N38, N40, N42, N45, N48, N50, N52(M, H, SH, UH, EH ... intrinsic coercive force.6. With precise tolerance.Application for NdFeB magnet:Magnetic separator, Sensors, Wind generators, Vibration motors, DC motors, ...