This product (rhombic NdFeB magnet) is suitable for electric toothbrush above, N38 grade, nickel-plated surface, surface magnetic strength of 2700gs or so, proofing customized electric toothbrush magnets, toothbrush motor magnets offer welcome to call to drawings consulting.
In electric toothbrushes, diamond shaped magnets are a common design choice. Since electric toothbrushes need to drive the brush head to vibrate at high speeds, the shape and arrangement of the magnets is critical to their performance. Rhombic magnets provide a stable magnetic field distribution, which helps the motor produce more efficient vibration and torque, resulting in improved cleaning results. In addition, the diamond-shaped design also helps to better fit other components in a limited space, improving the compactness and functionality of the entire unit.
See more special shaped strong magnets: https://www.couragemagnet.com/irregular-neodymium-magnets/