Large ring magnets 1)Material:sintered NdFeB magnet 2)Garde:N35-N38- ... -N45-N48-N50-N52 3)Nickel,Zn etc coating Large ring magnets1)Raw materail:Sintered Neodymium-Iron-Boron (NdFeB)2)Garde ... ,block,cylinder,ring,bar,sphere,tile etc.size according to customer’s request.5)Coating:Ni,NiCuNi,Zn,Black Expoxy,Black Nickel,Ag ... .2>812>30>2388-0.11-0.51350-380200 Large ring magnet