Edison Replacement Nib – 18K Gold Rhodium Silver – Fine Point ED-18KSNIB-F. 18kt solid gold #6 size nib and feed unit that can be used to replace Edison production model fountain pens such as the Collier Hudson Beaumont and Herald Styles. This silver-colored version is plated with Rhodium to give the appearance of silver to match the silver trim on certain pen color models. To Replace put your thumb and forefinger on the nib and gently unscrew the currently installed nib counter-clockwise until fully removed from the pen’s front section housing. Then install the new nib by screwing clockwise into the section until the nib is firmly in place. Then connect converter or ink cartridge to fill up your pen and start writing! AUTHENTIC & GENUINE PRODUCTS. We are an authorized dealer for all the brands we carry. We do not sell imitations of any sort and only carry genuine, original brand name writing instruments and accessories. Please refer to your local import laws for details. We strive for your ultimate satisfaction. We cannot accept opened and used bottles of ink, ink cartridges, used notebooks, engraved pens or pen cleaning supplies. When you receive any new fountain pen, we recommend to inspect it thoroughly and if necessary, lightly dip the nib tip in washable ink to test it. Make sure all of your auctions have ended prior to checking out.