The Kaweco mini piston ink converter is suitable for all Kaweco plastic pens Sport series fountain pens.
It does not fully fit into the metal Sport pens (AL, Brass, etc).
Not compatible with Kaweco Liliput fountain pens.
Push and pull mechanism.
Length: 7cm / 2.76"
Diameter: 0.7 cm / 28" (tip: 0.4 cm / 0.16")