These rings were designed to securely hold the home button in place when replacing the screen on an iPad 5, 6, 7, or 8.
To use them, remove a full circle from the sheet, apply it firmly to the home button area, and then push the center circle through the hole. This leaves a high-grade adhesive ring around the home button area, as shown in the photo. Remove the protective top layer of release paper from the ring when you are ready to attach the home button.
Each pack contains 10 sheets of rings, and each sheet contains 10 rings, so 1 pack contains 100 iPad home button rings in total.