Rollerball can be refilled with the exchangeable One Change cartridge with Ultra-Smooth tip for the best writing experience.

The innovative Super-Flow-System guarantees consistent ink flow from start to finish. The cap-off ink does not run dry even if the cap is removed for 2-3 days and, besides this, is quick-drying and smudge proof. The One Change has a sturdy metal clip and a rubberised grip zone that provides a secure hold for relaxed writing.

Climate protection and practicing professional environmental policy – the One Change is produced CO2 neutral.

Waterproof according to ink standard ISO 14145-2.

Line width: 0.6 mm.

Ink colour: Black.