Uni Jetstream Edge ballpoint pen applies an 0.38 mm extra-fine tip. It offers you a precise writing experience. The ballpoint pen also features a hexagonal plastic barrel which prevents the pen from rolling on your desk. The ridged metal grip and a low center of gravity provide you with exceptional stability and control when writing. The special low-viscosity ink formula provides a smooth writing experience with rich color and crisp lines. The ink is also water-resistant, fast-drying and fade-resistant. Suitable for important documents and signatures. It is refillable with Uni Jetstream Edge Ballpoint Pen Refills - 0.28 / 0.38 mm - Black / Red / Blue .