Each pen I hand craft comes with a refill size you can find at most office supply stores. You are not stuck with a pen that you can not refill. For convenience, I offer a refill selection to compliment your pen.  Organized by refill type (Parker Ballpoint, Cross Ballpoint, Mini Cross Ballpoint, Rollerball and Fountain).   NEW!!! I now have the Fisher Space pen refills to fit my Parker compatible ballpoint pens.