SuperFlow ebonite feeder for Bock 250

SuperFlow ebonite feeder by FPnibs.

Fpnibs made from Japanese ebonite specially created for Bock 250 standard size 6 units. 

With 3 ink canals and a big air canal for maximum ink flow performance.

Great for flexible nibs.

This feeder fits TWSBI 700 and 700R pens.