TWSBI ECO Cosmo w/Onyx Fountain Pen《Extra Fine》 sailor tuzu and the tray can be

and the tray can be removed

Bookmark string

The yarn itself is finished as a work of art

They come in two sizes: A5 and A5 square

TWSBI ECO Cosmo w/Onyx Fountain Pen《Extra Fine》 sailor tuzu and the tray can beTWSBI fountain pens are renowned for their high quality and affordability, offering advanced filling mechanisms usually found in more expensive pens. The TWSBI ECO features a high capacity piston filler, a sleek transparent barrel that lets you keep track of your ink level, and a hexagonal screw on cap. How to use the Piston Filler Fountain pen by TWSBI: Simply unscrew the end cap, dip into ink, screw back the end cap, and your done! Ready to write!