ELMERS-2 all purpose glue sticks. Strong enough for the office! Permanent acid free photo safe and non-toxic. Contains 2 .21 ounce sticks. Works on a variety of paper types including cardboard foamboard and display board. Seal envelopes apply labels mount pictures charts and graphs photo albums business presentationis home and office projects. Keep from freezing. Conforms to ASTM D 4236. Washable!