Jacques Herbin Refillable Rollerball PenThe Herbin rollerball pen uses fountain pen ink cartridges that allow you to switch out colors frequently. The pen is small, compact, and refillable. Uses any short international ink cartridge. 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 Refill your pen with any short International ink cartridge Imported