... .quality prior&timely delivery rare earth neodymium dc motor magnetProduct Description1.Material of NdFeB magnet: Magnet N-( N30-------N52), working temperature:80 degree ... -(N28AH, N30AH, N33AH), working temperature:220 degree Celsius.2.3.Magnet shape: Block,Ring, Arc,Disc, Cylinder, Rod,Bar, Cube,Sphere,Strip ...