The ultra-smooth tip provides the best writing experience for fast and efficient work. The new generation of rollerball pens is introduced with the "One" series. The Free-Ink Super-Flow System ensures a consistent ink flow from start to finish. The regulator system compensates for temperature and air pressure fluctuations, preventing the pen from leaking. Rollerball pen with hybrid needle tip for pleasantly smooth writing. High-quality metal clip. Ergonomically rubberized surface. Cap off, can remain open for 2-3 days. Document-proof according to ISO 14145-2. High writing performance is guaranteed.