History of ballpoint pens

English name of ballpoint pen

In the United States, the oily ballpoint pen Pen is called a ball point pen. The thing about the water-based ballpoint pen is called a roller pen. By the way, it is called K-gel Punkt shreiber in the Germany word, and in Chinese, the yen-two-bee.
As for the neutral ballpoint pen pen, it is likely to be included as a kind of an aqueous ballpoint pen pen, but the English translation is not decided especially, and it seems to pass with the gel ink pen.