Faithfull FAIMAGBM254 Button Magnet 25.4mm Power 3.2kg The Faithfull Button Magnets are made from Alnico to provide a high resistance to corrosion and operate in high temperatures up to 500 Degrees Celsius. The north and south poles are on the same face and separated by a slot. All sizes have holes for mounting the magnet but they must not be recessed into ferrous metals as it will short circuit the magnetism. Suitable to be used as work holding devices for welding sign making and other applications or for reed switch operation. Diameter: 25.4mm Height: 16.0mm Pull Power: 3.2kg