Size M, Medium Nib As a new color for the fountain pen "Custom 845," following the existing black and vermilion, we will release a deep and beautiful blue color, "Konjo" (Prussian Blue). The nib is 18-karat gold, size 15, and the ebonite barrel is finished with a lustrous roiro-urushi lacquer. This is a full-fledged fountain pen that combines the beauty and dignity of lacquer with practicality. No price reduction.