This pack of 5 Pilot Hi-Tec V5 rollerball pens is perfect for delivering neat and precise lines of liquid ink and are widely used in offices, schools and at home.The ink flow control system in these pens keeps the flow of ink consistent to the last drop and has a window so you know when it\'s time to change to a new pen. The 0.5mm leaves a 0.3mm writing line for precise and presentable handwriting.. Pack of 5. Ink window. Flow control system for consistent ink flow. 0.5mm ball leaving a 0.3mm line. Rollerball. Approximate dimensions (mm) H 210 W 91 D 15