... experience ,full production , best price and high quality Prducts nameN35 Magnetic Balls With 5mmBrand nameWinchoiceMaterialNeodymium, rare earth materialTolerance5+0/-0.1 ... mmFeturesinc, Copper+Nickel, Epoxy, Gold, Silver, Passivation, and custom coating available upon request.Magnet Material: NdFeB Magnet, Neodymium Magnet ...