uni-ball™ Zento Flow Gel Pen Refills

This ink refill is specially designed for the Uniball ZENTO gel pen series by Uni Mitsubishi.

The newly developed ZENTO ink is a water-based pigment ink that provides a smooth, quick-drying writing experience with clean lines that resist smudging, feathering, water, and light.

Key ink features

• Smooth, low-resistance writing
  With a new POA surfactant that acts like a cushion between the pen tip and the paper, writing feels softer and more fluid.
• Crisp lines with minimal smudging or bleed-through
  Special “attraction particles” help the ink stay together as you write, reducing spread and keeping lines clean and sharp.
• Long-lasting, vibrant color
  Pigment-based particles provide excellent water and light resistance, making your writing stay clear over time, making it a good choice for anything you want to keep, like notes, logs, or important paperwork.