Thank you for viewing! Mitsubishi uni α Gel Alpha Gel Ballpoint Pen Ink color: Black This is a discontinued, rare item! I'm no longer in an office job and don't plan to use it in the future, so I'm selling it. This is a rare, unopened item, so I haven't tested the ink, etc. Please understand this before purchasing m(_ _)m Please refrain from purchasing if you are sensitive to items stored at home^^; Type...Ballpoint pen Ink...Oil-based Features...Single color Body material...Plastic