This one is a good size for when children need to learn about magnetism

Supplied in a transparent gift box

These magnets are for you

rust is only visual and will not have any impact on the magnets effect: the magnetism is not weakened unless the entire magnet is attacked by rust

Very strong magnet - must be handled with care

Power magnet, Blok 20x20x10 mm. Auto-translated (NO) This one is a goodVery strong block magnet of neodymium. A value of N42 and approx. 12 kg in straight tractive power. Length: 2 cm. Width: 2 cm. Height: 1 cm. Strength: approx. 12 kg. Really strong, square magnet of neodymium which is able to stuck on to all kind of magnetic surfaces. Can also be used on glass boards, but be very careful because it is really strong and will attract the other magnets which are on the glass board with high power. Are two magnets sticking