Asahi Kasei Saran Wrap Pen Red, Black, Blue 3-Piece Set

Thank you for looking.
This is a set of 3 pens for writing on Asahi Kasei Saran Wrap, in red, black, and blue.

Used 2-3 times after purchase.
After that, they were kept in a drawer at home.
Confirmed that the ink flows.
Please purchase only if you understand that this is a used item.