Gummimagnet m. indvendigt gevind, Ø20 mm. knivskinne So if you hang it

So if you hang it on a glass surface

blackboards and metal surfaces - but not on glass boards

Magnetic buttons are not just for normal clothes and secure bag closure

These signs  with 1 mm

but be careful when using magnets of this strength

Gummimagnet m. indvendigt gevind, Ø20 mm. knivskinne So if you hang itSmall but powerful pot magnet with rubber coating and internal steel thread (M4). The magnet is made with N42 neodymium. And the internal thread is made with Q235 steel. Diameter: 2 cm. Height: 0. 6 cm. Thread: M4 Strength: approx. 3. 2 kg. This magnet can be used together with a M4 pot magnet with external thread. And you can also use it with a M4 screw. The internal thread goes all the way through just push your screw all the way through the rubber