As shown in the picture

There are countless options

we make our magnets with a density of N45 or higher

or you can use an M5 nut

but of course it is also a very good collection of magnets for the fridge at home

Kraftig magnet "LUDO" mini, Blå Auto-translated (EN) As shown in the pictureBlue Ludo magnet. Extremely strong magnet in the shape of a blue pawn in a game a magnetic pin player. Strength: approx. 1. 5 kg. Width: 1. 3 cm. Height: 2 cm. Very powerful blue plastic magnets, shaped as Ludo pieces. Strong magnet for the fridge og for the office. Fun magnet with powerful magnetism. Please note: Not suitable for small children (small parts).