... quality NiCuNi,Zn,Epoxy N35,N38,N40,N42,N45,N48,N50,N52 round magnets with holes, Any size Product specifications:1. neodymium rare earth round magnets with holes are with ... force and high intrinsic coercive force.6, With precise tolerance ... can stand very high working temperature, as high as 200 centigrade. ...