Bock compatible Nib Unit with Osprey #6 Regular 2-Tone EEF, EF, F, M, B Nib

Rebuilding a grail that lost its head.

Had a Titanium that was great until it started leaking, buckets and buckets. I happened up on osprey, even though I have one in my pen case. They told me what was wrong and how to fix it. Just to be sure I trusted them and bought eefine, efine and fine. So far I have loaded the eefine and it is doing great. I figure the old adage if it is German it will be a little wider.