Double-headed glue / Double-headed glue

In many cases, we might want to use glue more efficiently, however, the one-sized glue head would be hard to use in small and thin area. Double-headed Glue has two different sizes, and transforms the original shape into linear style, which makes us to use it with flexibility.The shape of it also prevents from rolling on the desk and drop, also gives more convenience for users.
Our concept is to use the flat-shaped glue head instead of traditional one, the large head and small head can be used for different situation (larger space or just some linear space), and the flat head is also better to smooth the glue on paper.