These stamps are indexing stamps. That means, we used these stamps with a permanent ink to stamp the backs of stamps we sold wood mounted. We have since gone to stickers for our wood mounted stamps so our craft store customers can have a barcode to scan. Now we have thousands of perfectly good wood mounted stamps that need a new home.
If you love wood stamps, leave them mounted. If you like cling-mounted stamps, it's fast and easy to un-mount your stamps from wood and place on a material like EZ Mount Cushion.