Osprey Pens is offering Size 6 Regular nib units compatible with Pens that accept Bock nib assemblies. Available in Extra-extra-fine (EEF), Extra-Fine (EF), Fine(F), Med (M), Broad(B), and Double Broad (BB) in chrome, gold and 2Tone finishes. 

These units will not fit Osprey Scholar, Milano or Madison fountain pens, as they are made specifically to match a Bock housing thread pattern.

The Regular size 6 nibs are great for everyday writing. The nibs are fitted with plastic feeds. And work with pre-filled ink cartridges or with bottled ink using any generic international converter.

This listing is for the Steel nibs.

#6 Steel: 

EEF – 0.45mm
EF – 0.55mm
Fine – 0.65mm
Med – 0.75mm
Broad – 0.9mm-1mm
Double Broad – 1mm-1.2m

We also offer other Bock compatible nibs as shown below:

Special Grinds (Steel only):

Broad Stub (B-Stub)– 0.9 -1.0mm
Double Broad Stub (BB-S) - 1.2mm-1.5mm
Broad- Left Oblique (B L/O) 1mm-1.2mm
Broad- Right Oblique (B R/O) 1mm-1.2mm
Architect Broad (B A) – 1mm-1.2mm
Architect Double Broad (BB A) – 1.2mm -1.5mm
Zoom Double Broad (BB Z) – 1.2mm -1.5mm