The unique glue applies with an easy-to-see purple color that disappears over time as it dries A better value than other brands, Avery Glue Stic offers 1.27oz per stick vs 0.77oz Heavy duty glue adhesive sticks to paper, cardboard, foam board, fabric, photos, glass and more This acid-free, photo-safe glue is also ACMI certified and conforms to ASTM D 4236, offering reliable performance for a wide range of everyday projects Perfect glue sticks for kids, larger crafts and school projects