... -breakage and anti-corrotion If you are interested in NdFeB block magnet,please tell us the information as follows,1.Material ... :Sintered Neodymium magnet2.Size:Such as block magnet,LxWxT3.Grade:N30-N52,N30M-N48M,N30H-N45H,N30SH ... specification of magnet,pleast let me know,I would like to assist you. HR Brand NO.041 Anti-breakage Block magnet China