- D1601N52Dimension: 1/2" dia. x 1/32"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$0.53D1602N52Dimension: 1/2" dia. x 1/16"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$0.61D1604N52Dimension: 1/2" dia. x 1/8"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$1.05D1606N52Dimension: 1/2" dia. x 3/16"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$1.75D1608N52Dimension: 1/2" dia. x 1/4"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$1.73