Material: Neodymium NdFeB arc Magnet Grade: 35-50(N, M, H ... are with high resistance to demagnetization. 2.Magnetic characteristics of permanent Neodymium NdFeB Magnet: N33-N52 ... N33UH-N38UH. 3.Shape of permanent Neodymium NdFeB Magnet: Disc, Ring, Block, Segment, Cylinder, Trapezoid ... , etc. 6.Applications of permanent Neodymium NdFeB Magnet: Motors, Generators,Neodymium Pot,Speakers,Sensors,Earphones ...