Customized Disc Magnet A 4mm x 2mm disc magnet is a small magnet with a diameter of 4mm and a thickness of 2mm that is shaped like a disc. This type of magnet is commonly used in various applications, such as in electronic products, healthcare devices, and DIY projects. Its small size and magnetic strength make it versatile and useful in a wide range of applications. Customized Disc Magnet website:http://www.yixingmagnetic.com/neodymium-magnets/disc-magnet/