Diplomat pens take a wide variety of fountain pen, ballpoint and rollerball refills. Diplomat fountain pens fit any brand of standard international-sized ink cartridges. Colorado Pen and Private Reserve offer a wide range of ink colors in these cartridges. You may opt to use the ink converter that came with your Diplomat fountain pen. Then you can choose from any brand of bottled ink, including the huge Colorado Pen bottle, specially formulated to clean as you write.
If your Diplomat pen twists or clicks at the top to deploy the point, it's a ballpoint. Check out the Ballpoint Refills for Diplomat window below. Parker-style ballpoint refills are offered in three ink types, three point sizes and ten different colors. Select from standard ballpoint ink, liquid ink or gel ink.
If your pen has a removable cap and isn't a fountain pen, it's a rollerball! Click on the Rollerball refills for Diplomat window below. The options are amazing.
Visit our Refill University if you would like a five minute education on pen refills, ink types and points. Customize your writing experience with all the ballpoint refill options offered by Colorado Pen.