Kuretake Fudegokochi - pen with pigmented ink - fine brush tip (0,5-3mm)

This revolutionary pen - the Fudegokochi - allows for very smooth writing. Its nylon tip reacts to the pressure exerted on it by producing thinner or wider lines as a consequence. The lines may be as thin as 0,5mm or as thick as 3mm.
Water-based pigmented ink.
Ink level visible through transparent slit in the handle.
Aerated cap.