Aleene's Acid-free Tacky Glue Stick. This stick features the same quality glue as the original Tacky Glue Sticks, but now available in an Acid-Free formula safe for use with photos and for scrapbooking. This fast drying and permanent glue goes on smoothly. This package contains 2 .8340mls of glue. Glue conforms to ASTM D4236.'