Scotch Double-Sided Tape Runner 4-Roller Value Pack offers an innovative way to apply permanent adhesive. Neater than glue, the dot roller delivers clean, precise placement for straight or curved applications. Double-sided adhesive on a liner dispenses easily and smoothly to the end of the roll. Hinged cover protects the tape. Adhesive is acid-free and safe for color photos. It is ideal for making charts, presentations and other home, office and school projects. Refill cartridge makes it fast and easy to refill with no threading.