uniball 150 Eye Ultra Micro Rollerball Pen, 0.38mm FineTip, Blue Ink, Precise Lines, Waterproof & Fade-Resistant Ink

Tip size: 0.38mm; Ink: blue, waterproof and fade-resistant; Type: rollerball; Cap with pocket clip; Portable, professional design; Brand: Uni-ball.

The 0.38mm tip delivers finer, sharper lines ideal for detailed diagrams, precise annotations, and small handwriting. Larger tips (e.g., 0.5mm) produce bolder lines, which are better for general writing.

Ideal for technical writing, planners, diagrams, architectural or design notes, precise annotations, and professional documents where clean, lasting lines matter.

Remove the cap to write, then recap after use to prevent drying. Store in a cool, dry place and keep the cap on when not in use to maintain ink flow and protect the nib.

Yes. The blue ink is designed to resist water exposure and fading over time, helping ensure durable, long-lasting notes and documents.

The 0.38mm version offers finer lines for precision work, while other Uni-ball Eye rollerballs on Fepy may use larger tip sizes (like 0.5mm) for bolder lines. Choose based on whether you need delicate detail or thicker ink strokes.

Two close alternatives on Fepy are: - Uni-ball Eye Rollerball Pen 0.5mm Blue: https://fepy.com/product/uniball-eye-rollerball-pen-0-5mm-blue - Uni-ball Eye Micro Rollerball Pen 0.28mm Blue: https://fepy.com/product/uniball-eye-micro-rollerball-pen-0-28mm-blue

Yes. The fine 0.38mm tip combined with the archival-quality blue ink provides crisp, professional lines suitable for official documents and formal presentations.

Keep the cap on when not writing to prevent the nib from drying, store in a cool place, and avoid dropping the pen. Regular use helps keep the ink flowing smoothly.

Yes. If you’re not satisfied, you can initiate a return through Fepy according to the platform’s standard return process.

The ink is formulated for everyday writing and delivers waterproof, fade-resistant results. As with most writing instruments, avoid small parts exposure to children to prevent choking hazards, and handle with care.