Uni-ball Signo RT UMN-105 Gel Pen 0.5mm Box of 12 Japan

Uni-ball Signo RT UMN-105 Micro — Retractable Gel Rollerball, 0.5mm, Box of 12, Japan

• Signo RT Micro — Uni-ball’s Most Trusted Retractable Gel Platform: The UMN-105 is built on the Signo RT platform — one of the most widely used retractable gel pens in Japan and internationally, trusted by students, office professionals, and exam writers for its consistent ink flow, reliable click mechanism, and comfortable rubber grip. Box of 12 (1 Dozen) — the standard supply unit for classrooms, offices, and anyone who writes daily.
• Water-Based Pigment Gel Ink — 0.5mm, Waterproof & Fade-Resistant: The UMN-105 uses Uni-ball’s water-based pigment gel ink — a formula that delivers a smooth, consistent 0.5mm line that is waterproof once dry and fade-resistant over time. Ink that holds through highlighter passes, damp conditions, and long-term archiving without feathering or bleeding on standard paper weights.
• Steel Needle Tip — Precision Sightline, Consistent Line: The stainless steel needle tip provides a clear sightline to the writing point, making it easier to write precisely along ruled lines, fill in answer boxes, and annotate tight margins — a practical advantage for exam writers and anyone who needs to place every character accurately.
• Rubber Grip — Comfort & Control Through Long Sessions: The lower grip section is moulded in soft rubber that cushions finger pressure and reduces hand fatigue during extended writing sessions — a design detail that makes the UMN-105 the pen students and professionals reach for when they have hours of writing ahead of them.
• Refillable — Three Ink Colours, Made in Japan: Available in Black, Blue, and Red — each sold as a box of 12 pens. Compatible with Uni-ball UMR-85 replacement refills. Manufactured in Japan to Uni-ball’s precision quality standard. Made in Japan.

SKU: UNI-UMN105-05