Refill for the rotating Uni One 3 pen. Features the waterbased gel ink the series is known for, choose your size and color. Delivers dark blacks and vivid colors through uni-ball one ink technology that suppresses color material penetration into paper fibers. The result is writing that stands out clearly on your notebook or planner pages. Compatible with the Uni-ball One 3 (UME3-SR-38) and Uni-ball One 3 Gift Version (UME3-SRG-38), as well as the 0.5mm models (UME3-SR-05 / UME3-SRG-05).
3.0 × 3.0 × 98.6 mm (W × D × H)