Featuring an ultra-smooth tip for the absolute best writing experience. Schneider's ONE Business Rollerball pen was selected as the best product of the year by the Association of Office Products Brand Industry. This precision, German engineered, rollerball has an exceptional Super Flow System that provides for consistent ink flow. An ink regulator controls for air pressure fluctuations. The green ink is waterproof and held in a large ink reservoir with a visible level indicator. Liquid ink pens allow for the use of every drop of ink. Writes for 1.25 miles. The One Business will not dry out even if the cap is left off for 2-3 days. Includes a high-quality metal clip and an ergonomically rubberized grip. Waterproof, light resistant and documental according to ISO 14145-2. Each box includes 10 pens.