- R060202N45Dimension: 3/16" od x 1/16" id x 1/16"Material: Sintered Neodymium MagnetGrade: N45Coating: NiCuNi(Nickel)$0.12R060206N40Dimension: 3/16" od x 1/16" id x 3/16"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.28