Neodymium sphere magnet, 35 Grade, Diameter: 0.5in, Weight: 0.018 lbs, are made from the most powerful magnetic material in the world, are composed of neodymium, iron, boron and a few transition metals, extremely strong for
Neodymium disk magnet, Grade 35, Diameter: 1 inch, Thickness: 0.75 inches, Weight: 0.157 Lbs, are made from the most powerful magnetic material in the world, are composed of neodymium, iron, boron and a few transition metals,
Basic Magnetic Field Chamber - 3.625in By 2.3125in Diameter, Dimensions: Height: 3.625in, Outside Diameter: 2.3125in,Inside Diameter: 0.625in, Magnet Is Included, Insert A Bar Magnet, Up To Three-Quarters Of An Inch In Diameter