permanent markers cannot be erased easily

Uni PWE-5M

This magnet has a strength capability of 7

but no need to worry

Power magnet, Skive 20x20 mm. Tier1 permanent markers cannot be erasedStrong magnet of neodym with a straight pull of approx. 15 kg. Diameter: 2 cm. Height: 2 cm. Strength: approx. 15 kg. An incredible strength of 15 kg. which means that the magnet can carry its own weight more than 300 times. Powerful magnets are not toy and they can be difficult to seperate. (Just slide the magnets in opposite directions, possibly by use of the edge of a table) SPECIFICATIONS: Strength: approx. 15,000 g. Material: NdFeB Magnetisation: