uni-ball One Gel Pen Refill | 0.38 mm

A fine line that does not fade. The uni-ball One refill 0.38 mm is an original refill with pigment ink designed to remain on the surface of the paper — not soak into its fibers. The result? More intense color, sharper lines, and more legible notes. The quick-drying ink does not smudge or bleed through to the other side of the page.

Compatible with the Euro standard — fits the uni-ball One gel pen | 0.38 mm.

Product Features

• Water-based pigment ink — intense color, quick-drying, waterproof
• Large pigment particles on the surface of the paper — lines do not smudge or bleed through
• Fade-resistant and tamper-resistant
• Euro standard — wide compatibility with pens
• Available in black and blue

Specifications

• Tip thickness: 0.38 mm
• Ink color: black, blue
• Ink type: pigment, water-based, waterproof
• Tip material: metal 
• Standard: Euro
• Country of origin: Japan