– JETSTREAMEquipped with the world’s first epoch-making newly developed ink that realizes “addictive, smooth writing taste”,”JETSTREAM” achieves a smooth writing taste with low writing resistance regardless of the writing speed compared to existing oil-based ballpoint pens.- A soft gel-like shock absorbing material “a-gel(Alpha Gel )” is used for the grip part. (Alpha Gel is a registered trademark of Taica Corporation.)- Ink color Black