These magnets are made with full color print on white magnets

So if you need to use it in wet environments or e

Ferrite magnets are often used outdoors

Disclaimer: If there is a gap between the magnet and the magnetic surface

We do not recommend these metal discs be used outdoors

Whiteboard magnet i Stål, Ø25 mm. boardmarker mix These magnets are made withExtremely powerful whiteboard or other steel board magnet for the office. Strength: approx. 7 kg. Size: 25 mm, Height 9 mm. Please note: These whiteboard steel magnets are not suitable for magnetic glass boards. Suitable for hanging up thick or very heavy items. Once the magnet adheres, it is very difficult to remove (can usually be pulled over the edge of the magnetic board). The magnet is nickel plated and has a brushed steel surface.