Mitsubishi Pencil Gel Pen Ballpoint Pen Jetstream 0.7mm dark olive

*Taking into consideration the difference in frequency of use of black, red, and blue ink, we focused on improving the usability of the most commonly used black ink. *First multicolor ballpoint pen with a new mechanism of rear-end knock only for black, allowing you to intuitively knock black without hesitation. *Red and blue inks have the same slide nock as before, but the new mechanism allows the user to eject and release the color even when any ink color is ejected. *The most frequently used black ink is equipped with a [long-lasting refill] that increases ink volume by approximately 70% compared to the standard product by making the refill tube thinner. *Reviewing the design of the barrel has improved the durability against barrel cracks, and embedding a metal part in the resin clip has improved the durability against clip breakage, so the barrel itself can be used for a longer period of time and is designed in consideration of the environment.