This is a flexible hook that has magnetic snaps, useful for hanging small or light items.
I use it to hang things from my easy-up frame while camping. The complete loop on the top keeps the hooks from falling off the frame in high winds.
The design should be printed in flexible TPU and although flexible, can hold a decent amount of weight.
Any 12mm x 3mm neodymium disc magnets (readily available on Amazon) should work when glued in place.