uni-ball One P Gel Pen | 0.5mm

Some notes just stick with you longer. The uni-ball One P is a compact gel pen with pigment ink that doesn't soak into the paper—it sits on its surface, making black colors deeper and bright colors more vivid.

The pen comes with a replaceable 0.5 mm pen refill; for those who prefer a finer line, a 0.38 mm refill is also available.

The One P model features a short, wide barrel—it fits in your pocket, feels comfortable in hand even with gloves, and the spring-loaded clip easily attaches to a notebook or textbook.

Product Features

• Water-based pigment ink — vivid colors, quick-drying, waterproof, and fade-resistant
• Large pigment particles remain on the paper surface — the line doesn't smudge or bleed through
• Compact ABS plastic barrel — lightweight, comfortable, pocket-sized
• Metal clip with wide opening — easy attachment to a notebook or textbook

Replaceable refills:

• uni-ball One Gel Pen Refill | 0.5 mm
• uni-ball One Gel Pen Refill | 0.38 mm

Specification

• Line width: 0.5 mm
• Ink type: black, pigment, quick-drying, waterproof
• Mechanism: retractable
• Grip diameter: 12.8 mm
• Max diameter: 14.0 mm
• Length: 117 mm
• Weight: 14 g
• Country of origin: Japan