Neodymium disk magnet, Grade 35, Diameter: 0.5 inch, Thickness: 0.25 inches, Weight: 0.013 Lbs, are made from the most powerful magnetic material in the world, are composed of neodymium, iron, boron and a few transition met
Bar Magnet, made from magnetic steel strips. Zinc plated and engraved with N and S to indicate north and south poles. Supplied in pairs with cardboard separator and plated soft iron keepers. For demonstrations, plotting magnetic fields. Size: 6x3/4x1/4 in. (150x19x7mm)