Rollerball Pen uni-ball UB EYE Design 0.4 mm, violet (MPN 148185)

uni-ball UB EYE Design 0.4 mm in violet is a rollerball pen engineered for precise writing and detailed note-taking. The fine 0.4 mm tip creates consistent, narrow lines while the ink formulation ensures smooth flow and clear, legible text. The pen's balanced barrel and controlled feed support steady strokes for everyday tasks in office, school, and personal organization.

Advantages

The fine 0.4 mm tip delivers accurate, neat lines suited to detailed handwriting and small illustrations. Smooth ink flow reduces skipping and blots, promoting consistent results on standard paper. The moderate barrel diameter and lightweight design enable comfortable, prolonged use and improved control for steady handwriting. Violet ink provides a distinct alternative to common blue and black inks while maintaining professional clarity.

Suitable for

• Detailed note-taking and journaling
• Precise annotations and editing
• Technical sketches and fine-line drawings
• Everyday office and school writing tasks

Key specifications

• Tip size: 0.4 mm (fine)
• Pen type: rollerball
• Ink color: violet
• Line characteristics: narrow, consistent lines
• Ink flow: smooth, low-skip formulation

How to use

Remove the cap and hold the pen at a comfortable angle for writing. Apply light, consistent pressure to allow the rollerball tip and ink feed to produce even lines; heavy pressure is unnecessary and may affect tip performance. Replace the cap after use to prevent drying and store the pen horizontally or tip-up for extended periods to maintain optimal ink flow.

Usage recommendations

For the best results, use the pen on standard, moderately smooth paper to preserve tip life and maintain clean lines. When producing detailed work, allow freshly written ink to dry briefly before stacking pages or closing notebooks.