These are blue coloured calligraphy inks from Manuscript that come in a pack of 12 cartridges in total giving you more than enough ink to practice and create beautiful calligraphy. These cartridges are ideal for topping up and refilling your fountain or cartridge pens and if paired with a cream paper the blue ink will really bring your calligraphy to life. Manuscript fountain pens will be a perfect fit with these cartridges however they can be used with the majority of other standard fountain or cartridge pens. - Brand: Manuscript - 12 x blue ink cartridges - Ideal for topping up fountain or cartridge pens - Ideal ink for calligraphy