Sketch Markers come in all 358 colors. The replaceable Super Brush nib acts like a paintbrush in both feel and application. Sketch Markers feature refillable ink and optional nibs and are compatible with the Copic Airbrush System. This set contains the following colors:? V20, V25, RV55, RV63, RV66, YR30, YG61, BG53, BG70, E23, E81, E87.