Featuring an innovative, German engineered, ultra-smooth tip for the absolute best writing experience, the Schneider One Hybrid C 0.3mm pen has an incredible Super Flow System that provides for consistent ink flow. Liquid-Ink Technology allows for larger ink filling capacity and use of every drop of ink. An ink regulator helps control fluctuations in air pressure and controls the flow of ink to deliver precisely from start to finish. The ink is waterproof and held in large ink reservoir with a visible level indicator. The black ink will not dry out even if the cap is left off for 2-3 days. Includes a high-quality metal clip and an ergonomic rubberized grip. A combination of wear-resistant stainless steel and plastic make the writing tip extremely durable. Writes for over 1.3 miles. Fade and light resistant ink is also acceptable for documents. Box of 10. Discover for yourself why Schneider was voted the Brand of the Century by Deutsche Standards.