TWSBI Vac 700R Kyanite Fountain Pen - Clear with plated aluminium trimSee your machinery at work The TWSBI Vac 700R Kyanite takes the oversized Vac 700R demonstrator and gives it a cooler personality. The blue plated trim changes the whole mood of the pen. It feels more technical, more mechanical, less clear demonstrator and more like a piece of equipment. You still get the full view of the vacuum mechanism, huge ink chamber, and TWSBIs large #6 nib, for smooth, uninterrupted writing. What sets it apart Vacuum filling