Use 3L Scrapbook Adhesives Photo Corners for a quick, easy and inexpensive way to display your valuable photos without damaging or altering them in the process. Use color Photo Corners to add class and variety to your layouts. These photo corners are made of conservation-quality, clear, polypropylene and come in quantities of 250. No mess; self-adhesive; archival safe; PVC free. 3/8"" size.