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The Kaweco Sport Piston Filler is one of the smallest in relation to size and ink volume. The iconic pocket-sized fountain pen only measures 4-1/8" when closed and grows to an average size of 5-1/8" with the cap attached.
The transparent ink window allows you to monitor the ink level at all times. If the ink runs out, the piston filler can be refilled quickly and easily thanks to the exceptionally smooth-running refill mechanism. This filling system also enables the use of inks in an unsurpassed variety of colors, as many ink colors are only filled in bottles.
The piston filler can be individualized with one of our ten colorful inks as well as with slide on clips in silver or gold.