The Diplomat Esteem MadC collection is a unique work of both art and writing instruments. A special hydro dipping printing process is truly exclusive to Diplomat. Each pen is dipped into an alcohol polyvinyl film bath which ensures no two pens can look alike. Formatted with a Jowo nib in fine, medium, or broad. The Diplomat Esteem fountain pens use standard international ink cartridges or converter. Both are included with the pen.