These are black coloured calligraphy inks from Manuscript that come in a pack of 12 in total giving you plenty of ink to practice and create beautiful calligraphy. These cartridges are ideal for topping up and refilling your fountain or cartridge pens giving you plenty of ink to work with. 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 black ink cartridges - Ideal for topping up fountain or cartridge pens - Ideal ink for calligraphy