A neodymium magnet (NdFeB, NIB, or Neo magnet) is the most widely used permanent magnet type. It is a rare earth magnet made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure. Developed independently in 1984 by General Motors and Sumitomo Special Metals, neodymium magnets are in a vital application in the commercial area.
Custom Neodymium Magnets
A common device also often requires their accessories neodymium magnets’ tolerance to be controlled at +/- 0.05mm or, more accurately, maybe +/- 0.005mm. Custom is usual in neodymium magnets, but not only because it needs to customize a special shape.
There are different sizes of neodymium magnets for your reference.