- B060606N40Dimension: 3/16" x 3/16" x 3/16"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.21B060606N52Dimension: 3/16" x 3/16" x 3/16"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$0.33