The secret behind the Kaweco AL Sport fountain pen lies in its cap. The smart design allows the pen to be a compact pocket-size when capped and when uncapped it posts at the perfect length for writing. The hefty body is made of solid aluminum and is hand-polished with a matte finish. The cartridge filling system is easy to use with your favorite standard international fountain pen ink cartridges. Comes with one ink cartridge and Kaweco gift box tin. Silver-colored steel fine nib with iridium tip. Optional clips are sold separately. Approximate pen size as follows: Length Capped: 4.2" Length Posted: 5.3" Barrel Diameter: 0.4" Cap Diameter: 0.5"