Jacques Herbin Refillable Rollerball Pen with ConverterThe Herbin rollerball pen uses fountain pen ink cartridges that allow you to switch out colors frequently. The pen is small, compact, and refillable. Includes converter to use with any bottled ink. A great tool for all writing and correspondence. 4. 5" long Clear body and cap allow you to monitor ink level Chrome trim Medium point rollerball writes smoothly Flexible clip Includes converter to fill with any bottled ink Imported