The iron filings are perfect for either a physics class at school or to experiment with at home

så du ikke bruger tavlelakken til at mætte væggen med

of paper on a whiteboard

The magnets are designed in Switzerland in the finest quality

Power magnet, Skive 5x4 mm. BF Tier1 The iron filings are perfectDiameter: 0. 5 cm. Height: 0. 4 cm. Strength: approx 870 g. Small but really strong magnet. This size can't be used for glass boards. SPECIFICATIONS: Strength: approx. 870 g. Material: NdFeB Magnetisation: N42 Gauss: 12900 13200 (1,29 1,32 T) MGOe: 40 42 Max. temperaturee: 80C Surface: nickle plated (Ni Cu Ni) Is often used as a magnet for hobby projects