Neodymium discs are strong magnet and are very useful for hanging or holding circular or disc shaped metal objects as well as a wide range of other magnetic applications.

Rare earth neodymium magnets, also known as NdFeB magnets or Neo magnets, are made from an alloy of neodymium, iron and boron. They have excellent magnetic property and are extremely strong for their small size. Neodymium magnets are permanent, and have a high maximum magnetic energy.