Zebra Pen Mackie Knock Bold Red 10 Pieces Oil-based B-P-YYSB6-R

[Mackie Knock] A knock-type system that can be used immediately with one hand [Features] 1. Comes with a clip for easy carrying in a pocket, etc. 2. Prevents contamination due to loss of cap. 3. Airtight structure prevents drying. [Ink] Oil-based dye [Line width] 6mm [Ink type] Black, red, blue