Kaweco's classic octagonal-shaped pocket fountain pen in black plastic with Guilloche pattern engraving. Only 4 1/8" long capped, 4" long uncapped, and 5 1/8" posted. Steel nibs available in EF, F, M, B, & BB. Comes with one standard international cartridge; Kaweco's  mini piston converter is available separately. 

The following clips are also available separately for the Kaweco Sport:

• Octagonal Classic Chrome Clip
  
• Octagonal Nostalgic Chrome Clip
• Octagonal Classic Gold Clip
• Octagonal Nostalgic Gold Clip
• Octagonal Nostalgic Bronze/Copper Clip
• Octagonal Nostalgic Black Clip

Check out Kaweco Ink These Inks made by Kaweco  compliment this Pen.