OLO Brush R5.1 Peony

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. All OLO nibs work with all OLO half-markers.