After much R&D efforts, we are proud to announce the successful release of a fountain pen fitted with a Zebra G Titanium nib, much to the delight of the calligraphy community! The Zebra nib is fitted with a custom ebonite feed that provides a steady flow of ink, supported by a thread-able custom converter. The assembly consisting of the thread-able nib-feed-converter system is what we call the Zebra G Flexpert. You can order replacements as needed. The Flexpert series will only work with bottled fountain pen friendly inks. The pen comes with complete instructions, a nib block kit that helps in easy disassembly and assembly of the Flex nib & feed to clean when the pen gets clogged over time/use, along with a 2ml sample of Noodlers Black ink, to test the unit for performance upon arrival. Osprey range of Fountain Pens are made for everyday writing and for calligraphers & artists wanting to use the pens for sketching, drawing, writing, etc. With Osprey MILANO (a premium offering) or Osprey SCHOLAR (a classic collection) or the Osprey MADISON (student collection), all the nib units are interchangeable. Switching between different nib types becomes a breeze as the nib units have threads that screw and unscrew easily, without the mess of friction fit each time. Great value for your money – since you invest/buy one pen but get varied writing experiences through our choice of nib sizes, presented in inter-changeable nib units.