Magnetic door holder.
Work with repulsive force (out of axis) or attractive force (axis) of magnets.
Model tested, work good:
Secondary model (not tested) with round magnet (Ø15mm x H5mm) (https://www.magna-c.fr/produits/aimants-bruts-en-neodyme/aimants-ronds/aimant-rond-en-neodyme-oe15x5mm/37319).
The author marked this model as their own original creation.