Jetstream Edge features an extra fine 0.38mm ballpoint, metallic grip and a strong clip. The oil-based ballpoint is the finest in its category, and the drawing line width is narrower than gel ink pen with the same diameter. The ink uses the popular Jetstream ink, which is low-viscosity and oil-based ink. It dries fast and allows you to write thick, clear lines smoothly. This 0.38mm refill uses the same tip design introduced with the 0.28mm Jetstream Edge 0.38mm Default ink: Black Refill available ReleasedFebruary2021 Available in 0.28mm and 0.38mm