Big ring magnets 1)Material:sintered NdFeB magnet 2)Garde:N35-N38-N40-N42-N45-N48-N50-N52 ... 3)Nickel,Zn etc coating Big ring magnets1)Raw ... -N42SH,N30UH-N40UH,N30EH-N35EH.3)Shape:Disc,block,cylinder,ring,bar,sphere,tile etc.size according to customer’s request ... .2>812>30>2388-0.11-0.51350-380200 Big ring magnet