Muji Refill Smooth Gel Ink 0.5

specification	details
Brand	MUJI
Product Line	Smooth Gel Ink Pen Series
Product Type	Gel Ink Pen Refill
Tip Size	0.5 mm (Fine Point)
Ink Color	Blue Black / Dark Blue
Ink Type	Water-based pigment gel ink
Compatibility	MUJI Smooth Gel Ink Ballpoint Pens (both retractable knock type and cap type models)
Origin	Japan
Key Feature	High-vibrancy, low-friction water-based pigment gel ink offering a clean, skip-free 0.5mm line profile

Pen Refills Japan