Schneider Topball 850-05 Premium Rollerball Pen Refills, Black Ink, Box of 10
Fits majority of rollerball pens which do not take proprietary refills. Smooth-rolling ceramic ball for neat, even lines Capless-Quality won't dry out even without the cap It has 0.5mm fine point, Black ink, Sold As 1 Box of 10 Refills Made in Germany