... Neodymium magnet for Speakers The lagest size can be Dia 220mm, Typical Grade:N35,N40,N42,N45,N52,35H,38SH Speaker Neodymium ... -Ag, Ni-Au, etc. Applications: Wind Power Generators, Motor Parts, MRI/Nuclear Magnetic Resonance (NMR), Magnetic Separators, Cleaning ... Our sintered NdFeB magnets have 4 distinct characteristics: High corrosion resistance and Low temperature coefficient, Large dimensions or ...