TWSBI ECO Black Marble w/Bronze Fountain Pen ink and a spring converter come

and a spring converter come all in one

580 has improved the smoothness of cap thread turning

No more inky fingers

Bottle cap can also fit our Diamond 50 bottle cap

do some coloring/shading in B

TWSBI ECO Black Marble w/Bronze Fountain Pen ink and a spring converter comeComes in EF, F, M, B, Stub1. 1 nib choices Colors: Creme Clear RoseGold 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 NOT