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OLO's Holiday Offer: Receive a $25 digital gift card for every $125.00 you spend! Offer excludes shipping. Your digital gift card will be emailed within 24 hours to the email address provided with your order. This offer ends December 5th.

Collect them all!

Easily shop OLO colors with our pre-selected Collections. Choose between OLO brush or chisel half-markers and replacement ink cartridges. Your markers will come ready to build. Colors are thoughtfully arranged, so each Collection size comprises the 128 OLO Collection. No repeats*, no missing colors. For example, all eight 16-piece Collections = the entire 128 color palette; all 32-piece Collections = all 128 colors, and so on. *The 16pc Gray Colors Collection 1 & 2 do not apply. Shop our Accessories page for additional Connector Rings, replacement nibs, and more.