Pilot Feed GP4 Retractable 4-Color Ballpoint Pen is both a very practical and a reliable tool for those who love multi-ink and high performance pens with absolute simplicity. An ergonomic pen with a rubber grip to ensure better control and a better writing comfort. The latest development in ballpoint ink technology with a super smooth writing and quick drying ink. Reliable and hard-wearing tungsten-carbide ball. With advanced oil-based ink provides a soft and fluid writing experience.