Gel rollerball pen Penac Inketti 0.5 mm blue — retractable gel ink pen

Penac Inketti 0.5 mm blue is a retractable gel rollerball pen engineered for precise, smooth writing. The 0.5 mm needle tip delivers fine, consistent lines while the blue gel ink offers good flow and legibility. The retractable mechanism protects the tip when not in use and makes the pen convenient to carry in pockets or pen holders, suitable for everyday note-taking, office tasks and detailed sketches.

Advantages

The retractable design eliminates the need for a separate cap and reduces the risk of ink drying or accidental marks. A 0.5 mm tip provides controlled, fine-line output ideal for detailed writing and small handwriting. Gel-based ink ensures consistent flow with even coverage and minimal skipping. The pen’s balance and grip geometry are designed to support comfortable writing during extended use.

Suitable for

• Everyday note-taking and journaling
• Office forms, signatures and document work
• Technical sketches and detailed drawings
• Schoolwork, homework and exam writing
• Precise annotations and margin notes

Key specifications

• Ink type: blue gel ink
• Tip size: 0.5 mm needle tip
• Pen type: retractable rollerball
• Line quality: fine, consistent lines with smooth flow
• Body: lightweight barrel with ergonomic grip profile

How to use

Press the retractable mechanism to extend the tip before writing. Hold the pen at a comfortable angle and apply light, steady pressure to maintain smooth ink flow and avoid blotting. Retract the tip after use to protect the point and prevent accidental marks. Store the pen horizontally or tip-up when not in use for prolonged periods to help preserve ink performance.

Usage recommendations

For best results, use on standard smooth paper suited for gel inks and avoid porous or highly textured surfaces that may increase feathering. If left unused for long periods, briefly retract and extend the tip before writing to restore consistent ink flow.