Model Number: SXN-1003-28.24 Black Product Features With the ultra-low friction "Jetstream ink," you can write incredibly fine lines with an ultra-fine 0.28mm ballpoint, finer than ever before. It is the world's first and smallest ultra-fine 0.28mm ballpoint pen in the oil-based ballpoint pen category. Compared to our gel ink ballpoint pens with the same ball diameter, the line width is finer. Using "Jetstream ink," a low-viscosity oil-based ink, it dries quickly, allowing for clear, dark lines and smooth writing. * As of August 2019 (according to our research) * Refills are available in three colors: black, red, and blue. Newly developed "Point Tip" for easy viewing of the writing surface The newly developed "Point Tip" has a slim shape towards the pen tip, allowing you to clearly see the pen tip even when performing fine writing tasks. A body shaft that combines functionality and design ● Functionality The front shaft is made of metal, and the grip has fine line processing for a non-slip design. In addition, the center of gravity is placed towards the pen tip, providing a stable design even when writing finely. ● Design The shaft expresses the fine, sharp lines that can be written by the "Jetstream Edge" through the thinness of the wire clip and the radial straight lines created by the hexagonal shaft. The shape that tapers towards the rear visually displays the center of gravity placed towards the pen tip.