To squeeze the rest of your cream, paste, paint etc. from the tube.Hello everybody,I decided to make the tube key more fancy. I included two sizes since the small one is only good for paint or narrow tooth paste tube. The slot size is 60mm. The big one can be used for hand cream an other large tubes because the size of the slot is 78mm. UPDATES:Please, let me know how the design worked for you.Enjoy!