These small magnetic circles come with a self-adhesive backside. You can use them to attach photos, cards, drawings, etc. to iron surfaces. Just push a little plate out of the sheet, remove the adhesive film, attach the plate to the backside of a card for instance and press it on - done! Now you can hang up the card on the fridge or a magnetic board.
If you order 1, you will receive 1 sheet with 24 magnetic circles, diameter 20 mm.