This listing is for the Osprey Size 6 Ultra-flex 2-Tone (UF 2T) stainless steel nib, fitted with a custom ebonite feed, in a threaded housing. This part that includes the nib/feed/housing is called the Nib Unit. The threaded housing on the nib unit allows for interchangeability  between models, and fits the Osprey Milano, the Scholar and the Madison model of pens.

Available tip sizes: EEF, EF, F, Med and Broad.

This nib unit can be used with bottled ink using a converter such as the Osprey converter or K5 Schmidt converter, OR use with a  pre-filled ink cartridge. This flexibility gives many folks the advantage of writing with an ultra-flex nib using either a cartridge or a converter.  

Typically, most suppliers in the market place sell Ultra-flex nib units with a plastic feed. We are one of the handful of folks that give an ebonite feed  with an ultra-flex nib. An ebonite feed works with a wider range of inks and is able to keep up with the ink demands of a flex nib, unlike a plastic feed.

If you have purchased an Osprey Milano, Scholar or Madison fountain pen, you can now buy replacement Size 6 Ultra-flex assemblies or just a nib unit.The assemblies cost $28, while the replacement nib units are priced at $24. The additional parts that come with the assembly are the generic outer grip section and the wide-mouthed custom osprey converter, that you don't get with just buying the nib unit.

If you are buying an assembly for the Madison series, it comes with a generic Clear outer grip section, and if you are buying for a Scholar or a Milano, it comes with a generic Black outer grip section.

Do not use India Inks, they can clog the ebonite feeds. Fountain Pen inks are recommended. Few examples of inks that work best with the Zebra G or Stainless steel  ultra-flex or the Titanium ultra-flex are :  The Noodlers standard Black , Platinum carbon Black, D’Artremis document Black ink, Pilot Iroshizuku line of inks, Rohrer & Klingner SketchINK. 

Send us an email to info@ospreypens.com if you have any questions.