During our testing

This version has rounded corners

They are super flexible and very magnetic

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Undersænket powermagnet, Ring 23x4 mm. boardmarker mix During our testingCountersunk magnet for a countersunk screw. Diameter: 2,3 cm. Height: 0,4 cm. Screw hole: 4,5 mm. (M3) Strength: approx. 6,5 kg. Round magnet with a countersunk hole. The strength on 4 kg is measured on a magnetic steelboard. If there is a gap between the magnet and the magnetic counterpart, the strength is weakened a lot. This magnetic type is not reinforced with a metal pot. You therefore need to be carefull in handling the magnet as it will break