I don't know how they could say this is compatible with the Pilot Penmanship,
it's too lose at the section, it can't even fit! I purchase this for the price
$3.3 and was so disappointed, cause I love the Penmanship too much, not just for
the price but also for the quality, the extra fine line is so good for me that I
couldn't find anywhere! I've planned to buy the cartridge, but I love the
Turquoise ink and they didn't appear as cartridge so I have to buy those
converter. I hope the CON-50 would be better but I think it's not worth to buy
the converter the same price as the pen!