3M-Scotch Removable Foam Mounting Squares. These mounting squares are great for around the house and crafting! With adhesive on both sides of the squares; mounting posters; photos and more is easy! And removal is easy and will leave no damage to most surfaces. These squares work well on wood; ceramic; tile; gloss and semi-gloss painted walls; glass; and refrigerators. Not recommended for use on wallpaper; delicate surfaces; or flat painted walls. Eight squares will hold up approximately 1lb. This package contains sixteen 1x1in adhesive squares. Made in USA.