Glass bottle with a widened neck to fit all fountain pens Water-based and compatible with all fountain pens Signature brass cap Ink deserves to be inspiring. From the moment you receive it, to when you draw it into your pen, it should remind you of the magic of writing. So we created an inspiring set of fountain pen inks, carefully crafted in distinct colours that will spur excitement, creativity, and a feeling of absolute joy every time you write. The ink in the bottles have been adjusted, to the best of our ability, to illustrate their appearance on paper. The ink swatches are the best representation of the colour.