One of the most common concerns customers express when purchasing a photo album is, "How will we mount pictures into our new album?" Feel free to use acid free glue sticks double sided acid-free tape. However, to have true freedom with your pictures and the ability to remove them or exchange them once they are mounted, then using our acid-free photo corners is the best choice for the task. Simply peel the transparent or black corners off the dispensing strip from the bottom of the box, slide one onto each corner of the picture and mount the picture onto the page. To exchange it for another picture with the same dimensions, simply remove the picture and slide another one in its place. The corners stay mounted onto the page. It's that easy.