Rubber coated Pot magnet:
The rubber coated pot magnet is made of small neodymium disc magnets, steel plate, and rubber. These disc magnets are embedded in the steel plate, and then the whole steel plate is coated with rubber. The steel plate well concentrate and enlarge the magnetism of these magnet discs. The rubber which covers the magnets and steel plate protects the magnet from corrosion and also well protect the delicate objects that contact pot magnet from scratch.
For the Black Rubber coated pot magnet,Also could be classified as three:Rubber Covered Neodymium Pot Magnet with External Threaded Stem,Rubber Covered Neodymium Pot Magnet with internal Threaded hole which is protruded, and Rubber Covered Neodymium Pot Magnet with internal Threaded hole which is no protruded.It consists of iron plus strong Neodymium magnet and Black Rubber.
