Schmidt 888 Medium Rollerball Refill (plastic tube). Standard size rollerball refill - fits rollerball pens that use standard size refills. (Exact replacement for Pic, Hauser 777 and many other refills.) The refill has a ceramic ball for smooth writing.

This refill fits Bexley, Conklin, Conway Stewart, Delta, Faber-Castell, Stipula, Visconti and Waterford Rollerball Pens. Available in Blue and Black only. Red and green are available in the Schmidt 888F refill