... Neodymium Magnet Disc Coated: Ni Shape: Disc Neodymium Magnet Disc1)Suitable for marking small volume magnet with complex shape;2)Regular shape, precision size,various coating ... standard of ROHS. Mainly made from neodymium, iron and boron and other mental element ... in industrial automation, mine, motor, communication, petroleum, magnet separator, medical treatment, Hifi acoustics, computer, Aviation, ...