Jowo size 8 18K nib with an ebonite feeder.
We have the tap to make the thread in the pen section:
https://fpnibs.com/collections/taps/products/m9-5-tap-for-size-8-nib-unit
Jowo size 8 18K nib with an ebonite feeder.
We have the tap to make the thread in the pen section:
https://fpnibs.com/collections/taps/products/m9-5-tap-for-size-8-nib-unit