Yes, these are flat-backed keys, but remember, they are primarily meant for scrapbooking, to be glued down onto a book. For another project, I have suspended the keys from the inside top of a small shadow-type box. This box has open windows on both sides & is quite unique. Other items will also be added soon. Look around, the possibilities are endless . . .
Be aware...these keys are flat backed, and are dimensional only on one side!