Buy Loose Nibs here that are either Bock Stamped, or "Fed Pens/FP" Stamped (Other loose Bock made nibs can be found here as well!). All nibs are sold loose, and are #6 size. They can be placed in any section that accepts #6 Nibs for a nominal charge ($5 for JOWO, Schmidt, or Bock sections). Email/Message me to discuss options!
Buy with confidence! Nibs are sourced thru a Bock affiliate. I have Mark Bacas (aka "Nibgrinder") grind select nibs into either Stub nibs, or Architect Nibs (depending on nib size).