strong permanent magnet,high coercive force,the max operation up to 200 degree ... and on-time delivery 2. Material: NdFeB magnet, Neodymium magnet, Permanent magnet, Rare earth magnet, strong magnet, Neodyme magnet etc.3. Magnetic grades: N35-N48,35M ... )X200(+/-0.20)X50(+/-0.10)mm7. Coating: passivation, blue Zinc, colored zinc, nickel, nickel-cupper-Nickel (double Nickel), epoxy, Gold, silver ...