... 3.steady performance 4.with high anti-breakage and anti-corrotion If you are interested in NdFeB block magnet,please tell us the ... as follows,1.Material:Sintered Neodymium magnet2.Size:Such as block magnet,LxWxT3.Grade:N30-N52,N30M-N48M,N30H-N45H,N30SH ... ,I would like to assist you. HR Brand NO.041 Anti-breakage Block magnet China