Securely fasten lightweight items to most surfaces with these removable glue squares from Glue Dots. With a strong yet temporary bond, these adhesive squares can be removed cleanly without leaving behind any residue or stains. Details: Clear3/16" (5 mm) each 8 dispensers (450 squares per dispenser, 3,600 total square)Removable squares Acid free and nontoxic Kid friendly and photo safe Conforms to ASTM D-4236