Refill cartridge replenishes the glue in the Kokuyo pen-style DotLiner adhesive applicator that provides smooth and accurate application of glue. Cartridge simply drops into the holder. The patented dot-type glue leaves no stringy drippings to clean up and is easy to apply. After laydown, the glue is visible for precision adhering and dries clear. Glue is acid-free, photo-safe and archival-safe.