Mark's Inc. Oil Ink Pen Refill 0.5mm – DAY Series
Oil-based ink refill designed for Mark'style DAY pens. Features a 0.5 mm needle-point tip for smooth, consistent writing.
- Compatible with: Mark’style DAY pens (BP1, BP4, BP6)
- Tip size: 0.5 mm (needle-point)
- Ink type: Oil-based
- Made in Japan
