TWSBI Vac 700R Fountain Pen - Clear with aluminium trimA vac filler built around ink capacity The TWSBI Vac 700R Clear is for people who enjoy the mechanism as much as the writing. The transparent body puts the vacuum filling system fully on display, from the long plunger rod to the ink chamber itself. Its a large pen with real presence in the hand, paired with TWSBIs smooth #6 nib and enough ink capacity to disappear into long writing sessions without constantly refilling. What sets it apart Vacuum