... .best price 3.quality prior&timely delivery rare earth neodymium dc motor magnetProduct Description1.Material of NdFeB magnet: Magnet N-( N30 ... Celsius.2.3.Magnet shape: Block,Ring, Arc,Disc, Cylinder, Rod,Bar, Cube,Sphere,Strip etc.4.Samples are available, welcome ... and with the most that we can do for you. dc motor ring magnet