- C0202N40Dimension: 1/16" dia. x 1/16"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.07C0204N40Dimension: 1/16" dia. x 1/8"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.14C0208N40Dimension: 1/16" dia. x 1/4"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.26