... excellent properties of high remanence,coercivity,and Max.energy product.Neodymium magnets gradeN35,N38,N40,N42,N45,N48,N50,N52(Max.operational ... 200c)N30AH,N33AH,N35AH(Max.operational temperature:up to 230c)Neodymium magnets Outsanding product:1)high performance:N52,N48M,48SH,42UH, ... it's not the same thing.Other Thoughts: Good for attaching thick stacks of paper to refrigerators etc or pinching ...