... available: 0.5-200mmShape: Block, Square, Disc, Cylinder, Ring, Rod, Bar, Stick, Tile, Fan, Ball3. Competitive, Reliable, Reasonable Price ... Rare Earth Magnet N Series: N35 N38 N40 N42 N45 N48 N50 N52M Series: 35M 38M 40M 42M 45M ... different work temperature.7. Wide Application of NdFeB, AlNiCo & SmCo magnets Speakers, Earphones, Microphones, Loudspeakers, Mobile Phone, Automobile, Motor, Engines, ...