The Magnet Source Magnet products, small but strong, for home, office and projects. Magnet Ceramic Disc . 5" 6 packs 10pc- Made from the highest grade of ceramic magnet material available, ferrite, with unbeatable pull strength. This powerful disc works well for small and medium-sized projects. Glue to the back of your project to make it magnetic. A total of 60 magnets.