It is not electromagnetism

The countersunk hole ensure that the screw will sit flush when fully screwed on the magnet plate

notat om returgrunden

also on the floor and in frames

Buy two sets if you also want magnets for the bottom corners

Undersænket pottemagnet, Ø13 mm. - Neodymium ludo mini It is not electromagnetismCountersunk magnets Diameter: 1. 3 cm. Height: 0. 45 cm. Screw hole: 3 mm. Strength: approx. 3 kg. These countersunk pot magnets (also known as shallow magnets) can be tightened with a countersunk screw (3 mm). A strong neodymium magnet encased in a steel cap (pot). The steel improves the adhesiveness of the magnet as it has direct contact with a thick steel surface. Strength is measured directly on a thick, magnetic steel plate. The strength of the