- Great for writing on a blackboard. Posca specializing in blackboards, with the three features of "resistant to rubbing," "difficult to flow in water and rain," and "erasable by spraying," while retaining the features of vivid colors and dark colors.
- Bold square core (writing line width 8.0 mm)
- 8 color set : White, yellow, orange, yellow-green, green, light blue, pink, red
