... . NdFeB Rare Earth Magnet Available Grades in: N, M, H, SH, UH & EHN35-N53,33M-N50M,30H-N48H,30SH-N45SH,28UH ... Degrees;3. Customized Coating & Sizes AvailableSurface treatment: Ni, Zn, epoxy, gold, tin, Ni+Cu+Ni and Cr3+Zn;Size available: 40 ... for Kyoto University (Japan) Welcome your OEM with own factory. Gold Coated N35 NdFeB Magnet Neoballs Toy