The Schneider® One Change Rollerball Pen features an innovative Super-Flow-System and Ultra-Smooth tip that guarantee consistent, even ink flow from start to finish. The large ink reservoir with ink level indicator ensures every drop of ink is used. Ink is waterproof according to ISO 14145-2. Includes a high-quality metal clip and an ergonomically rubberized grip to promote a relaxed writing experience without hand fatigue. Cap-off ink will not dry out, even if the cap is left off for 2-3 days. Refillable with the Schneider® One Change Rollerball Ink Cartridges. Two cartridges included in pen barrel. Writes in approximate line width 0.6 mm, Black ink. Box of 5 Rollerball Pens. The Schneider® One Change Rollerball Pen is produced Carbon Neutral and made in Germany. Made in Germany, Schneider® products are manufactured to the highest quality and environmental standards that have earned awards and accolades across the company's 80 year history. Known for reliability, functionality and sustainability, Schneider® Writing Instruments are available at excellent price points to empower creativity and pen to paper. Each thought is worth writing down - the Schneider® way.