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.