#6 Nib Unit

Sales here include the nib, feed and housing. All of our individually sold nibs get our 7 step testing and tuning process, the same as when included on pens.  Note that most reported nib issues come from individual nib sales, so it's crucial that you use the proper technique to install and remove nibs. See our video here of our recommended method: https://www.franklin-christoph.com/pages/recommended-method-for-changing-removing-replacing-a-nib #6 Nib units fit Franklin-Christoph Models 02, 03, 19, 20, 20p, 31, 33, 40, 46, 50, p66, 66 Stabilis and more to come. High Performance Steel is more like gold today than most nibs you'll find through pen history. They are still firmer, but have the same iridium tipping. We also now have a jet black coated steel nib we call our Raven Nibs. Polished steel and raven options will perform the same. 18K Gold is softer and the nibs will write a little wetter. 14K Gold is softer than steel but springier than 18K, and we prefer it's performance in most nib options. Our solid gold nibs also get a rhodium plating for a silver color, but the logo is cut in relief, showing the yellow gold in the diamond shape. ​ All tip sizes are "Western" and equivalent to most US or German brands. Stub Italic Gradient (S.I.G.) nibs are ground in house at Franklin-Christoph. 1.9 Christoph Music nibs come in polished steel;  ruthenium plated steel which has a light greyish tint to it is no longer available.  Nagahara ground nibs are only sold when set in a new pen purchase so are not listed here for individual purchase. Lines sizes based on our Blue 72 ink, on our sugar paper, using medium pressure. *Note that the Cursive Calligraphy (cc) nibs are factory designated actual tip sizes. Factory Line Sizes: XF = Extra-Fine .4mm F = Fine .5mm M = Medium .6mm B = Broad .8mm 1.1 = Cursive Calligraphy * 1.5 = Cursive Calligraphy * 1.9 C = Christoph Nib  Masuyama / Nagahara Line Sizes: ​N = Needlepoint .25mm FI = Fine Italic .55mm MCI = Medium Cursive Italic .7mm MS = Medium Stub .7mm BCI = Broad Cursive Italic .9mm BS = Broad Stub .9mm S.I.G. Line Sizes: SIG XF = .45mm SIG F = .55mm SIG M = .7mm ​SIG B = .9mm For more information about nib differences, including videos, visit our Nib Detail and Info page.