For example

Kan ikke bruges på en magnetisk glastavle

Kubemagneterne kan sagtens holde dine billeder

as they are not strong enough

you should (as mentioned above) only use it for general board markers (as in the photos provided)

Magnetfiskeri, sæt m. krog og snor (100 kg.) hyldeforkant For exampleThis is our smallest set, but before you dive into magnet fishing as a beginner, you should know that 100 kg is a formidable force. So, even though it's on the lower end in the magnet fishing world at 100 kg, be cautious with this magnet! Fishing magnet Diameter: 6 cm Height: 2 cm Hook size: M8 Strength: approx. 100 kg Fishing rope Length: 15 meters Thickness: 0. 7 cm NB! Magnets are not toys! We advise against using this fishing magnet for children