TWSBI ECO Black Fountain Pen ink Only fits R version

Only fits R version

580 or Mini fountain pen you can use the colored band attachment to refill your TWSBI fountain pen without having to use the nib at all

Simply unscrew the front section of your Diamond fountain pen and attach it to the filling apparatus

Color: Midnight Blue

Comes in EF

TWSBI ECO Black Fountain Pen ink Only fits R versionComes in EF, F, M, B, Stub1. 1 nib choices Colors: White Clear or Black Clear Pen cap is able to post onto the back of the pen Piston Filler Fountain pen. Simply unscrew the end cap, dip into ink, screw back the end cap, and your done! Ready to write!! Pen cap has an inner cap to insure a perfect seal when stored away. Made for the beginner who just wants to try out fountain pens, all the way to the experts. A good everyday worker. Please note: Ink is