This pen can be filled directly with bottled ink by unscrewing the grip section and filling the pen with the included eyedropper
The T1 is a screw-top pen with an aluminum cap and end section
available in three variations
There is a distinctive color change and color separation in this ink
The Faber-Castell logo is engraved on the end cap
J. Herbin Fountain Pen Ink Cartridges [Tin of 6] Color:Gris Nuage This pen can be filledHerbin is the oldest name in pen inks in the world. M. Herbin created The Jewel of Inks in his shop on the Rue des Fosses Saint Germain in Paris in 1700. Herbin uses all natural dyes in their fountain pen inks. This natural composition is reflected in the very neutral pH of the inks. Cartridges Universal snap in cartridges. (Fits all pens except Waterman, Sheaffer, Parker, Lamy, A. T. Cross, Pilot Namiki, Sailor, Platinum, Aurora, Fultz and Nakaya) 6