I remixed the model so that it could be used practically. The holder is printed from PLA for strength in bending. It can be attached to the wall with screws for which two recessed holes are made in the model, or it can be glued with double-sided adhesive tape, it's up to you. Similarly, the holes for magnets are prepared for magnets of size 12x3 mm, but thanks to the pads you can use other sizes, for example (12x2; 10x2; 10x3). Always pay attention to the correct orientation of the magnet when gluing. I stuck the magnets with super glue.