Kaweco Sport Classic Fountain Pen Blue F (fine) Compact size feels just right in your hand, 4.1" long (104mm) closed, 5.2" long (132mm) open, and slightly over 1/2" in diameter (14mm) The cap screws securely on to close the pen and protect your pocket and the nib Utilizes the standard international size mini ink cartridge Made in Germany Comes in Standard Kaweco Cardboard Box