XV Flex Pro Nib Set
XV Flex Pro Nib Set
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"Not exaggerating when I say this is the absolute best nib I have ever used. The control and flexibility are simply unmatched." - Thomas Spencer
Exclusive Flex Experience
Our proprietary design redefines writing pleasure.
The XV Flex Pro Nib Set represents our commitment to writing excellence. This exclusive design balances everyday smoothness with artistic expression, delivering an experience that elevates both your daily correspondence and special creations.
Engineered for the Writing Connoisseur
Where innovation meets tradition.
Our proprietary Flex Pro technology offers remarkable line variation from an extra-fine 0.4mm to an impressive 2.0mm with minimal pressure. The premium tipping material ensures buttery-smooth writing while our specialized design provides the perfect resistance for controlled flourishes and expressive lettering.
Choose Your Perfect Fit
Two versions for your favorite XV pen.
Select the version specifically designed for your pen:
- XV Batavia Version: Complete with threaded nib unit for simple screw-in installation in your XV Batavia Fountain Pen.
- StoneGraph Version: Includes complete grip section with pre-installed nib unit for easy screw-in installation in your StoneGraph Fountain Pen.
FREQUENTLY ASKED QUESTIONS
What types of writing is this best for?
What types of writing is this best for?
Perfect for both everyday writing and decorative flourishes - ideal for journaling, correspondence, calligraphy, and artistic expression.
How does this differ from the XV Titanium Gold Flex Nib?
How does this differ from the XV Titanium Gold Flex Nib?
The Flex Pro features our proprietary in-house designed nib with premium tipping material, making it significantly smoother for everyday writing.
The Titanium Gold Flex Nib, by contrast, has no tipping material - intentionally designed to be sharper for creating extremely fine lines and wider line variations.
Choose Flex Pro for comfortable daily writing with moderate flex, or Titanium Gold for specialized artistic applications where maximum line variation is desired.
Is it difficult to install?
Is it difficult to install?
Not at all. Both versions feature convenient installation - simply unscrew your current nib unit and screw in the Flex Pro for XV Batavia pens, or replace the entire grip section for StoneGraph pens. No special tools required.
What inks work best with this nib?
What inks work best with this nib?
Compatible with all standard fountain pen inks and you can also use a fountain pen ink cartridge.
Is this compatible with other fountain pens?
Is this compatible with other fountain pens?
The nib itself is standard #6 size and can technically be removed from our housing for use in other pens that accept #6 nibs. However, for optimal performance, we recommend using our complete nib unit with the pen it was designed for.
Which version should I choose?
Which version should I choose?
Select the XV Batavia version if you own an XV Batavia fountain pen, or the StoneGraph version if you own a StoneGraph pen. Both feature our easy installation system.
Craftsmanship Meets Compassion
Craftsmanship Meets Compassion
By selecting our writing essentials, you're not only embracing the timeless art of writing but also supporting a cause that seeks a world free from exploitation. We proudly allocate 10% of our profits to A21, a global organization dedicated to ending human trafficking and restoring hope and futures to countless individuals. With every fountain pen, ink, or notebook you acquire, we collectively write a brighter, more hopeful chapter. Join us in crafting a narrative of positive change.
Global Delivery, Right to Your Doorstep
Global Delivery, Right to Your Doorstep
Embrace the art of writing with our exquisite collection, available for delivery wherever you are in the world.
Orders for our USA customers are dispatched from our California warehouse when in stock. Expect a delivery window of 3-5 business days for the USA, with a confirmation email and tracking details sent post-dispatch.
For our valued international patrons, we ensure your selections are shipped from a nearby fulfillment center, making delivery efficient and timely. International deliveries, facilitated by trusted local courier partners, typically reach you in approximately 7-12 business days.
Whether you're in the USA, Europe, Asia, or anywhere else, you can easily track your order on our website or reach out to our dedicated customer support team for assistance.



