Calligraphy FAQ https://kallipos.de/calligraphy-faq.html
flexibility and the fineness of their tip: EF = extra fine, F = fine, M = medium, B
flexibility and the fineness of their tip: EF = extra fine, F = fine, M = medium, B
flexibility and the fineness of their tip: EF = extra fine, F = fine, M = medium, B
The first two, which are very b, are used primarily for writing on parchment or thick