It became one of the materials of my own tool.
I use it instead of the bearing of the rotating part.
Since only dimensions were thin,
When I found this product with Monotaro,
I thought "This is exactly this!"
Since there is a notch, it was easy to insert also inside the material.
Rotation resistance also has no problem, it seems to be strong against wear,
It is very handy.
However, since I think that it will become a consumable item,
I think whether to purchase the same thing again.