Capless rollerball pen refills in black medium (.7 mm) for all Retro 51 Tornado Rollerball pens. Made in Germany for Retro 51 by the Schmidt company - manufacturer of refills for most European pen lines. 1 year cap off time. Stock number REF5P-Black or number REF-57P-Blue
Dimensions: Rollerball refill is 3-7/8" (97.5 mm) length