- D1801N40Dimension: 9/16" dia. x 1/32"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.40D1801N52Dimension: 9/16" dia. x 1/32"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$0.60D1802N40Dimension: 9/16" dia. x 1/16"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.40D1802N52Dimension: 9/16" dia. x 1/16"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$0.50D1803N40Dimension: 9/16" dia. x 3/32"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.55D1801TN40Dimension: 9/16" dia. x 1/10"Material: Sintered Neodymium MagnetGrade: N45Coating: NiCuNi(Nickel)$0.60D1804N40Dimension: 9/16" dia. x 1/8"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.65D1804N52Dimension: 9/16" dia. x 1/8"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$0.75D1806N40Dimension: 9/16" dia. x 3/16"Material: Sintered Neodymium MagnetGrade: N40Coating: NiCuNi(Nickel)$0.85D1806N52Dimension: 9/16" dia. x 3/16"Material: Sintered Neodymium MagnetGrade: N52Coating: NiCuNi(Nickel)$0.99