Replacement Ink Cartridges hold 2ml of OLO alcohol ink. Marker caps, Nibs, and Connector Rings are not included with Replacement Ink Cartridge. However, additional OLO Connector Rings, replacement nibs, and other accessories are available. Marker bodies are color-coded for quick nib identification. All OLO nibs work with all OLO Replacement Ink Cartridges.
