... 1.High and stable performance magnet ball 2.Good anti-degausser ,High anti-corrosion magnet 3.Available ball diameters: ... magnets, which use neodymium (Nd), iron (Fe), and boron (B) as their main ingredients.1. The ... and Micro products, such as Motor, sensors, loudspeaker, windmill, Auto, National defence, Speaker, Computer, Biology project, Medical treatment, Instrument and Meter etc. colorful ball ...