UBR-Z Refill is usable in the Uni ZENTO extended lineup. Black, Blue, and Red available in .38mm, .5mm, and .7mm.
[INK FEATURES] Newly developed ZENTO ink for a stress-free, soft writing experience. Cushioning POA ingredients act as a buffer between the ball and paper. Compared to Uni's conventional water-based ballpoint pens, it reduces writing friction by approximately 40%. Pigment particles within the ink suppress the spread of the ink, resulting in clean lines without bleeding or show-through.
