Pilot VBall Rolling Ball Pens feature a liquid ink feed system that assures smooth, skip-free and consistent writing. The unique liquid ink formula maintains consistent flowing strokes – no smearing or blotting. A visible ink supply lets you see how much ink is left, so you know when you are running low and need to replace your pen. These pens come with 0.5mm extra fine point tungsten carbide tips and are available in a variety of colors (sold separately) to emphasize, organize, and color-code information. An all-around quality pen – pick one up today!