Osprey Pens is offering Size 6 standard nib units compatible with Pens that accept Bock nib assemblies. Available in EEF, EF, F, Med, Broad, and BB in both chrome, gold plated and 2Tone finish.

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

The standard size 6 nibs are great for everyday writing. These nibs are fitted with plastic feeds. 

These nib units work with pre-filled ink cartridges or with bottled ink using a converter (any generic international or Osprey converter will work with this threaded insert). 

#6 Gold:

EEF – 0.45mm

EF – 0.55mm

Fine – 0.65mm

Med – 0.75mm

Broad – 0.9mm-1mm

Double Broad – 1mm-1.2mm

SpecialGrinds (Steel Only):

Broad Stub – 0.9 -1.0mm

Double Broad -Stub 

Architect Broad – 1mm-1.2mm

Architect BB – 1.2mm -1.5mm

Zoom BB – 1.2mm -1.5mm

Broad- Left Oblique 1mm-1.2mm

Broad- Left Oblique 1mm-1.2mm