This is a set of three washi tape cutters which are designed to cut 1.5cm width washi tapes into different ribbon shapes (ribbon, zigzag, and half-width ribbon).  You can also cut out a tape with a clean trim by using the other end of the cutter (see the 3rd picture).

* How to Use*
1) Put a 1.5cm width washi tape in the cutter.
2) Slide the tape until its edge reaches the cutter's window.
3) Pull out the desired length of the tape through the window.
4) Press down the cutter blade and tear off the tape.