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Uni-ball ONE Ink Refill 0.38 / 0.5 (Black)

Uni Mitsubishi

Ships within 48 hours
11.2 cm
6 mm
Nib Size:
0.3 or 0.5 mm
Ink Colour:
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Elevate your writing experience with Uni-ball ONE Black Ink Refill. Choose precision with 0.38 (UMR-38S) or 0.5 (UMR-05S) nib sizes, compatible with Uni-ball One P and One F gel pens. Enjoy clean, quick-drying ink that won't smudge or bleed through, ensuring a pristine, professional finish every time. Perfect for meticulous tasks and everyday use.

  • Length: 11.2 cm
  • Diameter: 6 mm
  • Nib Size: 0.38 or 0.5 mm
  • 1 refill per package
  • Black ink colour
  • Made in Japan



Uni Logo

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.