Half-markers: One OLO half-marker has 2ml of ink, more than a standard alcohol marker. Utilize an OLO Connector Ring with any two half-markers for a double-ended marker with over 4ml of ink! Combine half-markers to create unique double-ended markers that feature your choice of colors and nibs! A complimentary Connector Ring will be automatically added to your shopping cart when you add any two half-markers. All OLO nibs work with all OLO half-markers.
Replacement Inks: Replacement Ink Cartridges hold 2ml of OLO alcohol ink. Marker caps, Nibs, and Connector Rings are not included with the 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.
