These Faithfull magnets have a traditional horseshoe shape and are often referred to as pocket magnets. They are ideal for use in education, experiments and science projects. They have a north and south pole and can be used to easily check whether items are ferrous or not. The magnets are made from Alnico to provide a high resistance to corrosion and will operate in temperatures up to 500°C.Supplied with a plate keeper to help preserve the strength of the magnet and stop metal being attracted to the magnet when not in use.