Mitsubishi Pencil uni Jetstream Paper Package 0.38mm 30 pieces SXR8038K. The outer box of the ballpoint pen is not included. ◆ There are 30 refills, but Please let us know if you want to change the colors. Black, Red, Blue, Green This is a 0.38mm refill ink for the smooth oil-based ballpoint pen, Jetstream, from Mitsubishi Pencil. Jetstream is significantly different from conventional oil-based ballpoint pens, offering a smooth writing feel and quick-drying properties, allowing you to draw clear, dark lines smoothly. It was renewed in November 2022, with a 10% increase in ink volume and a paper package to achieve continuous and effective plastic reduction. In addition, by making the printing on the refills clearer and easier to see, we have also taken measures to prevent incorrect purchases. Compatible products: SXE3-400-038 / SXE3-507-038 / SXE3-601-038 / MSXE3-500-038 / MSXE3-701-038 / MSXE5-1000-038, and other multi-color, multi-function Jetstreams (excluding Jetstream Prime)