... and Cr3+ZnSize available: 0.5-150mmShape: Block, Square, Disc, Cylinder, Ring, Rod, Bar, Stick, Tile, Fan, Ball3. Competitive, Reliable, Reasonable ... , different work temperature.7. Wide Application of NdFeB, AlNiCo & SmCo magnets Speakers, Earphones, Microphones, Loudspeakers, Mobile Phone, Automobile, Motor, Engines, ... visit our factory and cooperate with esteemed OEM!! N35-N52 cylinder magnets