... .5-100)mm4.Shape: Arc,Tile, Block, Bar, Ring, Cube, Disc, Arc, Cylinder, Coil, Ball, Stick, Strip, Cup, Irregular or others ... ,phone,TV,dynamo,Generators, servo motors, DC motors, computer rigid disc drives, Sensors, motors, rotors, wind turbines/wind generators, hooks, magnetic ... if customized4.Any special packing or other requirements irregular shape hard magnets, 0.1mm tolerance