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:
B2.4, B0.5, B2.0, BG0.4, BK, BV4.2, BV4.4, BV4.5, O2.7, OR2.0, R0.2, R0.3, R1.5, V2.4, V2.6, W-G0