... Custom dimension Disc,cylinder,block,tile.. strong N38,N40,N42..rare earth block magnets,Custom dimension Product ... specifications:1. Rare earth Strong block Magnets have grades of N35,N38,N40 ... SH,UH,EH,AH) etc.2. Working temperature for Strong rare earth block Magnets: from 80 centigrades ... magnets acccording to your own specifications or designs.2, We deliver goods in time and have ...