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 & smoothly to the end of the roll. Hinged cover protects the tape. Adhesive is acid-free & safe for color photos. It is ideal for making charts, presentations & other home, office & school projects. Refill cartridge makes it fast & easy to refill with no threading.