Zebra's liquid rollerball pen provides comfort and precision in one pen. Water-based liquid ink performance is smooth flowing, skip-free and is good to the last drop! The needle point tip starts effortlessly and allows for precise markings. The liquid rollerball pen features a clear window for ink supply monitoring and a convenient pocket clip so you can attach them to textbooks, planners, clipboards, documents or bags. Zebra's liquid rollerball pens are great for studying, bullet journaling, greeting cards, and notetaking. 0.5 mm extra-fine needle point.