Delta fountain pens fit any brand of standard international-sized ink cartridges. Colorado Pen and Pelikan offer a wide range of ink colors in these cartridges. You may opt to use the ink converter that came with your Delta 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 you need an ink converter for your Delta fountain pen, we've got those too.
Most Delta rollerball pens and all Delta ballpoints use the Parker-style refill. 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. Parker-Style Ballpoint Refills
A few Delta rollerball pens use a different refill. In that instance, it is best to refer to your old refill and compare the size and configuration to the rollerball refills we offer at http://www.coloradopen.com/category/rollerball-and-fineliner-refills
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.