Ink cartridges made in Germany for fountain pens. I purchased these as replacement ink for a LAMY Safari fountain pen, but I never used them, so I'm putting them up for sale. There are 5 cartridges in a box, and the color is blue. I believe they are compatible with the LAMY Safari, but I am a fountain pen beginner and don't know much about the product. Therefore, I would like to sell them to someone who understands the situation.