block magnets: N35-N42-N52,N50M,N48H,N45SH,N40UH,N38EH... Max temperature: 80-200'C ... Magnets with holes, N35,N38,N40,N42,N45,N48,N50,N52.. Product specifications:1. Neodymium rare earth block magnets with different ... grades of: N35,N38,N40,N42,N45,N48,N50,N52(M,H,SH,UH,EH) etc.2. Working temperature for ...