Rollerball pen MITSUBISHI UB-120 micro 0.3 mm blue

The MITSUBISHI UB-120 micro 0.3 mm blue rollerball pen is designed for precise, smooth writing and detailed fine-line work. This rollerball combines a micro 0.3 mm tip with a controlled ink flow to produce clear, consistent blue lines suitable for note-taking, technical sketches and everyday writing. The slim profile and balanced weight give a comfortable grip for extended use, while the ink formulation minimises skipping and ensures even coverage on standard paper.

Advantages

The micro 0.3 mm tip delivers sharp, precise lines with minimal feathering, making it suitable for detailed tasks. Smooth rollerball ink provides a low-resistance writing feel and consistent flow for uninterrupted strokes. The pen’s slim barrel supports comfortable handling and steady control during long writing sessions. Blue ink offers clear contrast on white and off-white paper for legible notes and drawings.

Suitable for

• Technical sketches and fine-line drawing
• Detailed note-taking and annotations
• Filling forms and writing in tight spaces
• Everyday office and school writing

Key specifications

• Tip size: 0.3 mm micro rollerball
• Ink colour: blue
• Writing system: rollerball with liquid ink
• Barrel design: slim, lightweight body for precise handling
• Line quality: fine, consistent lines with low skipping

How to use

Hold the rollerball at a comfortable angle and apply light to moderate pressure to allow the liquid ink to flow smoothly through the 0.3 mm tip. For the finest lines, maintain a consistent writing speed and avoid pressing hard, which can widen the line. Cap the pen securely when not in use to prevent the tip from drying out. Store horizontally or with the tip down for best ink readiness before use.

Usage recommendations

Use on standard office or sketching paper for optimal line clarity; test on specialty or very absorbent paper to confirm desired results. Replace or recap the pen after prolonged pauses to maintain consistent ink flow.