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:
B0.5, B0.6, B0.7, B2.0, B2.2, B2.6, B2.4, BG0.4, BG2.1, BG2.3, BG2.4, BK, BV2.3, BV2.6, BV4.2, BV4.4, BV4.5, BV4.7, G1.4, G1.7, G1.8, O2.2, O2.4, O2.5, O2.7, OR1.1, OR2.0, OR2.2, OR2.5, OR3.4, OR3.7, OR3.8, OR7.1, R0.2, R0.3, R0.5, R1.5, R1.7, R1.8, RV0.1, RV0.2, RV0.4, RV0.6, V0.3, V0.6, V1.1, V1.6, V2.3, V2.4, V2.6, V2.7, V2.8, W-G0, W-G1, W-G3, W-G5, W-G7, W-G9, Y1.1, Y1.2, Y2.0, Y2.3, YO2.5, and ZERO.