Scotch Adhesive Dot Roller 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 dots on a liner dispense easily and smoothly to the end of the roll. Hinged cover protects the tape. Adhesive dots are acid-free and safe for color photos. They are ideal for making charts, presentations, and other home, office and school projects. Refill cartridge makes it fast and easy to refill with no threading.