Super-strong formula for long-lasting adhesion Bonds up to twice as fast as ordinary glue sticks. Goes on blue for more accurate application. Ideal for sealing envelopes, applying labels, mounting pictures and more. Washable, acid free, photo safe and nontoxic. Elmer's Glue & Adhesives part of a large selection of office supplies. Elmer's(R) Extra-Strength Office Glue Sticks, 0.28 Oz, Pack Of 24 is one of many Glue Sticks available through Office Depot. Made by Elmer's.