The tall foil is often used for storage shelves

You really have to know what you are doing before throwing yourself into handling a magnet of this size and strength

The magnet weighs only a few grams in itself

bar magnet only has a strength of 1

Power magnet, Ring 20x4x5 mm. 3M The tall foil is oftenRing magnet made of neodymium Permanent magnets Diameter: 2 cm. Height: 0. 5 cm. Hole size: 0. 42 cm. Strength: approx. 7. 3 kg. Strong neodymium supermagnet with a hole in the middle. The magnetism sits on the large surfaces. SPECIFICATIONS: Strength: approx. 7,300 g. Material: NdFeB Magnetism: N45 Max. temperature: 80C Surface: nickel plated (Ni Cu Ni) NOTE! The magnet is NOT countersunk.