Fountain Pen Revolution Two-Toned Fountain Pen Extra Fine Nib: Elevate your writing with this #6 EF Ultra Flex Nib—custom ground at the shoulders for ultra-soft flexibility and dynamic line variation. Whether you're a calligrapher, sketch artist, or journaler, these writing instruments offer exceptional control and character. With a line width that ranges from an extra fine 0.4mm to a dramatic 2.0mm when fully flexed, you'll achieve dramatic stroke variation with minimal pressure. Made from high-grade stainless steel and tipped with smooth, German-made material, this signature pen nib delivers a premium writing experience without skipping or scratching. Designed to fit pocket fountain pen compatible with several fountain pens, it's a top choice for tinkerers, collectors, and professionals. Whether you're customizing your favorite pen or enhancing your fine tip fountain pen setup, this nib is a precise and stylish tool. FPR's attention to detail makes it a standout option among calligraphy nibs and pen nibs. Gift it, upgrade with it, or collect it—this nib performs as beautifully as it looks.