Not suitable for magnetic glass boards (too strong)

A rubber cap is included to protect your board

If you think that magnets only are those you played with in the physics class

the magnets are designed to be easily opened

der kan ødelægge magnetfolien

Undersænket powermagnet 20x20x4 mm. magnetark-farvet Not suitable for magnetic glassSquare neodymium magnet with 1 countersunk screw hole. Size: 2 x 2 cm. Height: 0. 4 cm. Screw hole: 4. 5 mm. Strength: approx. 7. 5 kg. You can fasten this magnet with a countersunk screw or bolt (not included) onto a piece of wood or surface that is not magnetic. Once secured, the countersunk square magnet plate will provide you with a magnetic surface. Not for outdoor use will rust over time. SPECIFICATIONS Strength: approx. 7,500 g. Magnetism: N35