Description This Sailor Pro Gear Realo fountain pen in Black with Gold trim has a classic flat-top cap and barrel design, and features a deep black resin barrel and cap, accented with a gold-plated clip and trim. The legendary Sailor 21kt gold nib comes in several options, each of which offers an extraordinary writing experience. The cap screws on to close, and the cap will post on the barrel when writing. This piston filling mechanism only uses bottled ink, and the ink view window is visible even when the pen is capped. The Sailor Pen company uses the concepts of REliance And LOcus, and the first Realo was born in 2006 for the company's 95th Anniversary.A detailed description of the Sailor standard and Bespoke Specialty nibs can be found Here.