The Pilot Custom Heritage 912 can fit to 15 different nibs, each one with special characteristics, which ensures that it adapts to our requirements, from extra-fine to calligraphic, flexible, semi-flexible... You can see complete description in concept.
The nib of this model is the BB (double broad) one, in a Japanese fountain pen usually the iridium is finer than the occidental BB nibs.
Filling system: Cartridge/converter
Nib: Size 10. Gold 14k
Converter included. con-70
Gift inkwell included