Pilot Precise V5 Rolling Ball Pens feature a unique liquid ink formula that maintains consistent flowing strokes. With patented precise needle point technology, each pen has a ringed ink feeder for a smooth and even ink flow, and a visible ink supply lets you see how much ink is left. 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!