The Kolbenfüller is our first Piston filler pen. We chose one of our favorite commercial materials (JUMA) to highlight this beauty. It features a generous 1.75" cast acrylic ink window (will not yellow), combined with one of the 9 colors of Juma.
Juma is a thermo plastic with a snake skin / reptile scale pattern
You can optionally have the metal piston body sleeved with the same color juma material for consistency of appearance.
In the image gallery, please see the photo with all juma colors available.
