3L 500 count double-sided adhesive squares approx. 1/2"x1/2" in size. These squares are archival and acid-free. Can be used to permanently secure photos, cardstock, cards, and other memorabilia onto your album & scrapbook pages. Click'n stick mounting squares come in a disposable applicator that's easy to use, because you apply the mounting squares directly from the applicator to your pictures, rapidly and accurately without leaving a mess of blue tabs eveywhere.