You can use the magnets with a M6 nut

The corners are rounded so you don't cut yourself on the metal

et bord eller noget helt fjerde om til en kridttavle

And do not touch the adhesive surfaces with your fingers

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Hestesko Magnet 100x63 mm. rød/grøn (stor) 3M You can use the magnetsBig horsesho magnet classic red green magnet as known from the science lab in school. Size: 10 x 6. 3 cm. We also have the horseshoe magnet in other sizes. SPECIFICATIONS: Max. temperatur: 450C Material: AlNiCo Colours: red and green. The purpose of a horseshoe magnet's U shape is to place the magnetic poles as close together as possible. NB! This is not a children's toy. AlNiCo magnets cannot withstand being crushed or dropped on the floor. Their