Uni-ball ZENTO UBR-Z-05 Water-Based Rollerball Pen Refill 0.5mm - Black | Compatible with Uni-ball ZENTO Retractable Pen | Japan Mitsubishi Pencil Authentic Refill

The New Standard in Water-Based Rollerball - Uni-ball ZENTO UBR-Z-05 Refill

Introducing the Uni-ball ZENTO UBR-Z-05 Water-Based Rollerball Pen Refill 0.5mm in Black - the authentic Japan Mitsubishi Pencil replacement refill for the all-new uni-ball ZENTO retractable rollerball pen. The ZENTO refill uses a water-based ink formula that delivers an exceptionally smooth, fluid writing experience - combining the effortless flow of a liquid ink rollerball with the convenience of a retractable click mechanism. The black barrel with teal-green tip is the signature look of the ZENTO refill system. Multi-purpose use, suitable for many pen types.

• Water-Based Rollerball Ink - Exceptionally Smooth and Fluid: The UBR-Z-05 uses Mitsubishi Pencil's water-based ink formula - a liquid ink system that flows more freely than gel ink, delivering an exceptionally smooth, effortless writing experience with minimal hand fatigue during long writing sessions. The 0.5mm ball produces a clean, consistent black line with natural ink flow that feels closer to a fountain pen than a standard gel pen. Ideal for extended note-taking, journaling, and any writing that benefits from a fluid, expressive line.
• 0.5mm Ball - Precise and Versatile: The 0.5mm ball diameter delivers a precise, clean line that is ideal for exam answer sheets, study notes, daily journaling, and professional documents. The teal-green tip cap is the signature identifier of the ZENTO refill - making it easy to distinguish from other refill types in your pen collection.
• Compatible with Uni-ball ZENTO Retractable Pen Bodies: The UBR-Z-05 is the standard replacement refill for the uni-ball ZENTO retractable rollerball pen range. The product label notes multi-purpose compatibility - suitable for many pen types that accept the UBR-Z format. Check your pen body for UBR-Z-05 compatibility before purchasing. Simply click out the old refill and click in the new one - no tools, no mess, no waste.
• Authentic Japan Mitsubishi Pencil - ZENTO New Generation Refill: The uni-ball ZENTO is Mitsubishi Pencil's newest rollerball pen platform - a next-generation writing instrument designed for the modern writer who demands both performance and style. The UBR-Z-05 refill is the authentic Japan-made replacement, guaranteed to deliver the same ink quality and writing experience as the original refill supplied with new ZENTO pens.
• Japan Mitsubishi Pencil Authentic - Student, Professional and Stationery Enthusiast Essential: Mitsubishi Pencil - Japan's trusted writing instrument brand behind the uni-ball, Signo, and Jetstream families - brings the same quality engineering to the ZENTO platform. A must-have for ZENTO pen users, water-based rollerball enthusiasts, and anyone who wants the smoothest possible writing experience from a retractable pen. Available in 0.5mm Black - also available in 0.38mm (UBR-Z-038).