Not for magnetic boards but for sticking directly on the wall

A screw that is too long can be shortened fairly easily with a small saw or chisel

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Jo længere gummimagneten kommer fra den magnetiske flade

This size is ideal as a magnet for magnetic glass boards

Undersænket powermagnet 40x20x4 mm. Auto-translated (EN) Not for magnetic boards butRectangular countersunk magnet Size: 4 x 2 cm. Height: 0. 4 cm. Screw hole: 4. 5 mm. Strength: approx. 12 kg. Magnet with 2 countersunk holes. The magnets must be handled carefully, as they are elongated and very strong. Careless use can therefore cause them to break. the easiest way to remove them from a surface is to push them over an edge, so you can grab the whole magnet instead of just a corner. If you are careless, they can break, as they are