Isomars Calligraphy Pen Set comes in an elegant case with a comprehensive range of nib sizes for use on all media. 5 Ink Cartridges ,1 Ink Convertor , 1 Black Ink- 35 ml . Our traditional dip pens provide superior control and stability delivering smoothness and an easy ink flow. The pen design allows fool-proof writing helping you write with ease. Thorough cleaning after each session helps performance and longevity.