Rare earth magnet ball 1. ceramics surface 2. size depend on your request 3. ... quality and low price 4. good performance Rare earth magnet ball Shape: Arc(segment), Block, Cube, Cylinder, Disc, Ring, Rod, Sphere ... : Sintered Rotator NdFeb magnets are generally used for motors, speaker, toys and electronics, sensors, transformers,winding machines,DVD/VCD,all kinds ...