Kumon Pencil Grip for Standard Pencils (New) Kumon Children's Pencil 2B (New)

This is a tool to help children hold pencils correctly, from Kumon Publishing.

I bought it because I was a little concerned about how my older child was holding their pencil, but I'm selling it because it was too small. I opened it and tried it on once, but my child said it was small and painful, so I took it off. Please only consider purchasing if you understand this point. Thank you.

I also bought Kumon's children's pencils, but they were not used, so I am selling them. They are unopened. There is a small tear-like mark on the box (see 3rd photo).