Neodymium magnets are some of the most powerful in the world and they have a very high resistance to demagnetization. These magnets can be used for a variety of incredible experiments, such as removing the fortified iron from breakfast cereal, attracting the magnetic fibers in a dollar bill or demonstrating paramagnetism. These magnets are used in computer disk drives, motors and loud speakers. These are NEW magnets and an incredible value.
Note: All Rare Earth magnets, such as neodymium magnets, are made of a ceramic and can be brittle. They are extremely strong magnetically must be handled with caution to avoid damage to the magnets and/or injury. Fingers can be pinched between attracting magnets and magnets can chip or break if allowed to 'jump' at an attracting surface or another magnet. Close adult supervision is required.