Unscrew cap, fill it with 1 row of magnets (the hole is sized to be just larger than the magnet diameter so it doesn’t rattle), rescrew cap. The tube is dovetailed to a matching slot on the holder that prevents it from rotating so the viewing “window” is always visible from the front.
How does it work? Asking about the organisers ; nobody knows how magnets work!
Unscrew cap, fill it with 1 row of magnets (the hole is sized to be just larger than the magnet diameter so it doesn’t rattle), rescrew cap. The tube is dovetailed to a matching slot on the holder that prevents it from rotating so the viewing “window” is always visible from the front.