Secretary of De Flex Nib Unit

(6 customer reviews)



Earn up to 180 Points.

SKU: N/A Categories: , ,


These are in high demand and custom made to order. Therefore, they are not ever in stock. If you would like to order one, you can proceed to the checkout with your desired configuration, and one will be produced for you and shipped out within 1 month.

These flexible nibs are inspired by the pioneering efforts of Ralph Reyes of Regalia Writing Labs. His pursuit and break through methods proved that modern steel nibs could indeed be as flexible as their gold counter parts.

This is Pen Realms very own custom flex nib offering.

This is a complete nib unit to fit in your Jowo or Bock #6 pen

Each nib is custom made and equipped with an ebonite feed

Secretary of De Flex Stats: EF line width .35 mm to 2.3+ mm

1.1 stub line width .35 mm to 2.8+ mm
PLEASE NOTE – Warranty and return is void if nib unit is disassembled.

Additional information

Weight 2 oz



Piston/Eyedropper, Cartridge/Converter


Bock, Jowo

Nib Material


6 reviews for Secretary of De Flex Nib Unit

  1. Evan (verified owner)

    This is a review of the nib itself, rather than the unit. I ended up switching the feed out for one that worked better in my extremely specific circumstances, but I don’t suspect this to be a common requirement for most people.

    The nib flexes well and snaps back quickly. The upper bounds of how wide you should flex the tines feel very intuitive, so it’s not likely that you will exceed that width unless you’re really gunning for some fat flex lines beyond reason.

    The tines flex very easily, so even though with zero force you can still write with it as an Extra Fine nib, it’s more likely that with the tiny amount of force exerted by normal handwriting, that you’ll probably be closer to writing as a Fine nib, or at the very least seeing some parts with Fine line variation.

    I do think the cross-cut flex style of nib does require even more proper technique than a standard flex nib, because if your angle is off by very much, there’s a chance for the tips of the tines to overlap slightly. This is more of a user-error issue though, and not a reflection on the quality of the nib itself. I’ve only had it happen to me while writing quickly with lots of line variation. You should be more impressed by the fact that this nib lets you write quickly with lots of line variation than off-put by the fact that if you mess up while doing that, the tines can overlap.

    This is definitely pricier than most other modern steel flex nibs, but there are also less issues. Five stars.

  2. MP0123456789 (verified owner)

    If you’re wondering if you should get it. The answer is yes. Yes, it’s that good. Just get one. Get the eyedropper setup and try an Opus 88. It’s divine.

  3. Emma

    I have the rare 1.1 Stub Secretary of de Flex, it is FANTASTIC. I have a dozen modern nibmeister flex nibs, and this might be my favorite of them all! With non-flex writing it’s incredibly bouncy and juicy, with barely any pressure flexing it has insane line variation from the stub/flex combo. I’m never not going to have this nib inked!

  4. Terea (verified owner)

    I really like this nib grind. It is VERY wet and flexes effortlessly. I am learning how to write with such a wet nib but the work Kirk does is outstanding. I ordered anther grind from him and I’m equally impressed.

  5. Damien Ancruem (verified owner)

    This is the flex-perience I have been seeking for the past year. I’ve spent thousands on other flex-nibs, some that weren’t even really flex nibs *cough* Franklin Christoph*, Vintage flex pens, modifying other cheap flex nibs and trying to build my own flex nib.
    I should have just bought the “Secretary of De Flex” flex-nib unit. When I first saw this nib I wrote it off as a gimmick….A whole year wasted on trying other things…only to find out this nib is THE TRUTH!!!
    I am going to pick up the 1.1Stub unit next month and another Opus-88 Demo.
    The search is finally over…THANK YOU!!!!

  6. Alexandre (verified owner)

    This is bar none the ultimate execution of what can be called true modern ‘full-flex,’ and that it was done with a humble JoWo #6 steel nib is nothing short of amazing. With no pressure, the nib writes a true extra fine line, and with only a little pressure can deliver generous swells and flourishes. Doodling around with this nib is surprisingly addicting, but the very wet feed calls for some serious paper to match. The increased inkflow is for good reason though, as this nib has not once railroaded in my experience even when writing fast while flexing (which cannot be said for any other modern flex nib I have tried, steel or gold). You may find that you have to re-learn how to ‘flex-write’ all over again with this nib; as a previous reviewer mentioned, the delicate tines do have a tendency to temporarily misalign if you rotate too much, particularly on diagonal strokes (and particularly on very toothy papers), causing a faint squeaky sound. Fortunately, Kirk has thought of this and kindly uploaded a video tutorial on the PenRealm YouTube page describing a trick to minimize the squeak. With a delicate hand and a smooth paper, however, this has to be the most rewarding flex nib I have ever used. Thank you Kirk!

Add a review

Your email address will not be published. Required fields are marked *

You may also like…