A 3-color ballpoint pen from Jetstream Edge! The world's first oil-based ballpoint pen category, the world's smallest, ultra-fine ball diameter of 0.28 mm. Since it uses "Jet Stream Ink", which is a low-viscosity oil-based ink, it dries quickly and allows you to write dark and clear lines smoothly. Equipped with a "point chip" that makes it easy to see the writing surface even in small parts. The pen tip has an eccentric shape with the core shifted. It works together with the Spirotech mechanism, and the refill always comes out straight toward the pen tip with respect to the main body axis, so a stable writing feeling like a monochromatic axis can be obtained, and it is easy to write in small places. In addition, the design is new and it goes well with point chips. It is a design that is particular about functionality such as stability when writing.