Cone magnets neodymium
These neodymium magnets are cone-shaped. On the small circular area the magnetic field lines are bundled, which gives the magnets a very high adhesive force. They are perfectly suitable for whiteboards, magnetic boards, etc. The stump holds notes securely and it can be easily removed by pulling it off to the side. If the base is attached to a metal surface, however, it is hard to remove.