These ink cartridges are for Greenfield Fountain Pens and other fountain pens.
Stop throwing away disposable pens and get one that will last you for years and that you can keep filling up again and again.
Blue or black ink
Made in EU
PLEASE NOTE; Ink cartridges have been known to explode in the extreme cold. Gah! It's not common but it has happened. If you chose to order your ink cartridges in the winter months then you accept the risk that the cartridges may or may not leak. I will wrap them up well just in case.