Keep your thoughts flowing and your pages vibrant with the official Uni-ball ONE 3 Multi-Pen Gel Ink Refill (UMR-ML). Engineered by Mitsubishi Pencil (uni) in Japan, this specialised multi-pen refill is crafted specifically to replenish your favourite uni-ball ONE 3 multi-colour gel pens, ensuring you never have to pause your creative journaling, structured note-taking, or critical proofreading sessions.
At the heart of the UMR-ML series is uni's acclaimed, proprietary uni-ball ONE gel ink technology. Formulated with premium pigment-based particles mixed with advanced cellulose nanofibers, this innovative ink is designed to minimise absorption into paper fibers. By sitting neatly on the upper surface of the sheet rather than bleeding into it, the ink delivers a strikingly crisp, dark, and uniform line. Whether you choose the ultra-precise 0.38mm tip for micro-grid planning or the smooth, bold 0.5mm tip for swift signature logs, your writing will jump off the page with deep blacks and highly saturated primary tones that are clinically proven to stay highly memorable.
The slender, low-profile design is engineered to slide perfectly into the rotating click selectors of uni-ball ONE 3 multi-pens, or any compatible Style Fit customisation multi-pens. The fast-drying formula completely eliminates everyday smearing or hand-smudging—an absolute necessity for fast-paced study blocks and left-handed writers.
- Length: 10 cm
- Diameter: 3 mm
- Nib size: 0.38 or 0.5 mm
- Ink colours: Black, Red or Blue
- Made in Japan
【ABOUT THE BRAND】
Uni Mitsubishi, also known as uni or uni-ball, is a Japanese writing instruments manufacture established in 1887. For over a century, uni-ball has been a global leader in providing innovative writing and art instruments.
The brand offers a wide range of products that includes high performing pencils, mechanical pencils, rollerball, ballpoint, felt-tip pens and markers.
