block magnets: N35-N42-N52,N50M,N48H,N45SH,N40UH, ... C Custom-made dimension Precise tolerance Neodymium Rare Earth Block Magnets with holes, N35,N38,N40,N42,N45,N48,N50,N52 ... .. Product specifications:1. Neodymium rare earth block magnets with ... SH,UH,EH) etc.2. Working temperature for Neodymium block magnets:from 80 centigrades to 200 centigrades.3. Can ...