Kaweco Piston Filler Classic Sport Ballpoint crystal enthusiasts claim this to

crystal enthusiasts claim this to be a truly uplifting stone

Standard short international size

From greenish-blue to soft pink

Or rather choose the ink cartridge that matches the colour of the writing instrument

Kaweco Piston Filler Classic Sport Ballpoint crystal enthusiasts claim this toEffortless comfort in classic design The Kaweco Piston Sport Classic, made of high quality plastic, complements the piston filler system with a light and robust variant. Weighing just 10 grams, the piston filler is almost weightless in the hand, ensuring long lasting writing pleasure. The fountain pen is entirely manufactured, assembled and checked by hand in Germany. The precise piston mechanism, in combination with the perfectly balanced nib unit,