Uniball Signo UMR-85N Gel Pen Refill 10-Pack

Uniball Signo UMR-85N Gel Pen Refill — 0.5mm | Box of 10

Keep your writing sharp and consistent with the Uniball Signo UMR-85N gel ink refill. Engineered by Mitsubishi Pencil in Japan, this refill delivers the same buttery-smooth, fade-resistant lines that made the Signo series a cult favourite among students, professionals, and stationery enthusiasts worldwide.

Slip a fresh refill in, click the cap, and feel the difference — every stroke lands with precision, every word stays vivid on the page.

Key Features

• Tip size: 0.5 mm fine point for clean, precise lines
• Ink type: Premium gel ink — smooth flow, quick-dry, smear-resistant
• Compatibility: Fits Uniball Signo UMN-155-05, UMN-105, UMN-152, and other knock-type Signo pens
• Pack size: 10 refills per box — great value for everyday use
• Available colours: Black, Blue, Red
• Origin: Made in Japan by Mitsubishi Pencil Co.

Who Is This For?

Perfect for anyone who refuses to compromise on writing quality — from exam prep and note-taking to journaling, sketching annotations, and office work. If you already love your Signo pen, this refill keeps it performing like new.

FAQ

Q: Which pens is the UMR-85N compatible with?

A: The UMR-85N is designed for knock-type (retractable) Uniball Signo pens, including the UMN-155-05, UMN-105, and UMN-152 series. Always check your pen model before ordering.

Q: What tip size does this refill use?

A: It uses a 0.5 mm fine-point tip, ideal for detailed writing and clean lines on standard paper.

Q: How many refills come in one box?

A: Each box contains 10 refills. You can choose from Black, Blue, or Red ink colours.

Q: Is the ink waterproof or fade-resistant?

A: Yes. Uniball Signo gel ink is formulated to be fade-resistant and water-resistant, making it suitable for documents and archival use.

Q: How do I replace the refill?

A: Simply unscrew or pull apart the barrel of your compatible Signo pen, remove the old refill, insert the UMR-85N, and reassemble. The process takes under 30 seconds.

Q: Is this an authentic Japanese product?

A: Yes. This is a genuine Mitsubishi Pencil (Uni-ball) product manufactured in Japan, sourced directly from authorised distributors.