Neo Cube, 216pcs 1.Size: 3-30MM 2.Coating:Ni-Cu-Ni,Zn,24K,18K,Silver, Epoxy 3.N35 Grade Neodymium 4.Tolerance:+/- 0.003mm Sintered Neodymium Magnet: is one of the high performance rare earth permanent magnets, which use neodymium (Nd), iron (Fe), and boron (B) as their main ingredients. 1. The NdFeB magnet has high remanence, high coercive force, high energy product and high ratio between ...