Half-markers: One OLO half-marker has 2ml of ink, plus over 90% more usable ink than other alcohol markers. Use an OLO Connector Ring to combine any two half-markers for a double-ended marker with 4ml of ink. Combine half-markers to create unique double-ended markers that feature your choice of colors and nibs.
Colors included in Collection: BG0.8, BG0.7, BG2.7, BG7.0, C-G3, C-G5, C-G7, C-G9, G0.1, G0.4, OR1.3, OR3.2, OR4.7, OR4.8, R0.4, R0.6