Uniball Zento Refill - Black Ink

Uni-ball Zento Refill in Black keeps your Zento Gel Pen writing without missing a beat. Purpose-built for the Zento, this refill delivers the same smooth, consistent black ink performance you bought the pen for in the first place — no compromises, no adjusting to a different ink character mid-notebook.

Available in both 0.5mm and 0.38mm tip sizes to match whichever Zento you're running. The water-based black ink flows cleanly and dries quickly, making it a reliable everyday choice for journaling, note-taking, and general writing.

Stocking a spare means you're never caught mid-page with a dry pen.

Perfect for: Uni-ball Zento users who want to keep writing without interruption.

Specifications:

• Brand: Uni-ball
• Compatible with: Uni-ball Zento Gel Pen
• Tip sizes: 0.5mm, 0.38mm
• Ink: Black, water-based