This acid-free, double-sided adhesive film is heat resistant, transparent, and wont yellow over time. As a sheet adhesive, Double Tack provides edge-to-edge coverage and will permanently bond to paper, fabric, wood, metal, plastic, and glass surfaces. Great for stationery, paper crafts, creating collages, and quick-fix items. Use to mount photos and artwork, school and office projects, and much more. Each package contains three 912? sheets.