The Faber-Castell Ambition fountain pen in OpArt Deep Water features a barrel made of dark blue colored resin with a fine guilloche engraving, which is accented by the highly polished chrome-plated cap. The spring-loaded clip secures the pen in your pocket or pen case, and the cap posts securely on the barrel when you are writing. The stainless steel nib is available in several nib options. The slimmer barrel is comfortable in the hand for long writing sessions. The Faber-Castell Ambition fountain pen comes with a standard international ink cartridge to get you started writing immediately, and a Faber-Castell converter for use with bottled ink is available separately. Please note that the Ambition fountain pens in Black Resin and the OpArt series do NOT include a converter, but the other designs do.