Holding magnets are also known as pot magnets or mounting magnets, which can be assembled with hook, eyebolt or any other accessories. With a strong magnet encased in a steel cup, all the magnetic fields are centralized on one side, this makes the magnetic force much bigger than magnet alone. The inside magnet can be neodymium, smco, alnico or ferrite, you can choose the most suitable material by its application, while the steel cup not only protects the magnets against chipping and cracking.