While Parker no longer makes mechanical pencils or multi-pens, we carry refills that will fit.The Monteverde mini ballpoint refill contains liquid ink that lays down smoothly, even from so small a metal point. They are available in medium and broad in black and blue. The other nine colors offered are medium point. Fisher offers a mini-ballpoint refill that contains oil-based, waxy ink. This refill can be snapped off to the perfect length to fit your multi-pen. You can also substitute a pda stylus refill for any one of the mini ballpoints.Most Parker mechanical pencils utilized .5mm lead and that's shown below.