Description
MITSUBISHI PENCIL uni-ball one Refill (UMR-05S / UMR-38S). A fresh start for your favorite uni-ball one. These refills bring back the crisp, vivid writing uni-ball one is loved for—rich pigment ink that stays sharp, resists smudging, and captures every word with quiet confidence.
Choose the line that feels right for you:
-
0.5mm (UMR-05S) for a smooth, expressive stroke
-
0.38mm (UMR-38S) for delicate, detailed writing
Available in five gentle, versatile colors: Black, Blue, Red, Orange, and Blue Black—from classic tones to soft, cozy accents for planners, notes, and creative pages.
The uni-ball one won the below awards:
- Japanese Stationery Award 2021
- iF Design Award 2021
- GOOD DESIGN AWARD
Key Features
-
Refill for uni-ball one pens
-
Two tip sizes: 0.5mm (UMR-05S) and 0.38mm (UMR-38S)
-
Five available colors: Black, Blue, Red, Orange, Blue Black
-
Pigment ink for crisp, vivid writing that stays sharp
- uni-ball one is an award-winning series (Japanese Stationery Award, iF, GOOD DESIGN)
Specifications
| Models |
UMR-05S (0.5mm) / UMR-38S (0.38mm) |
| Tip Sizes |
0.5mm / 0.38mm |
| Available Colors |
Black, Blue, Red, Orange, Blue Black |
