These small, thin self-adhesive disc magnets are little bigger than a watch battery but still combine the performance of neodymium, the strongest magnetic material in the world, with the convenience of premium 3M 468 self-adhesive. At just 1mm (0.04") thick they are easily concealed in many different products to produce magnetic closing mechanisms. Stationery, greeting cards, clothing and accessories all make use of these incredible tiny magnets. Choose these today for your creative project and you will be amazed at their strength. Because they are strong but compact they are also widely used in high-end technology applications.