TWSBI ECO-T Clear Fountain Pen onyx The TWSBI Diamond 50mL ink

The TWSBI Diamond 50mL ink bottle is a glass bottle with anodized aluminum top that is the perfect accessory for any fountain pen addict

dip into ink

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

and additional traditional Converter

TWSBI ECO-T Clear Fountain Pen onyx The TWSBI Diamond 50mL inkECO T has a slightly more pronounced grip section; to help with learning correct writing posture for kids, new enthusiast, and anyone who likes a little bit more structure to the grip area. Cap and end cap also has a rotary triangular shape design. Comes in EF, F, M, B, Stub1. 1 nib choices 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