The Manuscript 5-Nib Calligraphy Set, which includes a Classic pen, Ink Cartridges, and a case, is the ideal gift set for those who want to learn calligraphy and practice writing with pen. Five high-quality nibs are included in the set, letting you play around with different font styles, sizes, and colors. Set includes: Fine nib section (0.85mm). Medium nib section (1.1 mm). Extra wide nib section (1.35mm). 2B nib section (1.6 mm). 4B nib section (2.8 mm). traditional pen design. International size black fountain pen ink cartridges. Converter for Fountain Pen Ink. leaflet with instructions. Case for storage. NOTE: Fountain pens only work with water soluble or non-permanent ink, but they do use ink cartridges or converters.