The Schneider One Hybrid N 0.3mm Needle-Tip Rollerball Pen Black features a premium corporate liquid ink system. An advanced Super-Flow-System ensures continuous, skip-free handwriting. The innovative hybrid needle tip delivers an ultra-smooth gliding writing feel. The tamper-proof pigment ink resists water and fading cleanly. A transparent ink viewing window enables quick reservoir tracking. The cap-off technology stops drying for three days.