This Pentel Maxiflo Whiteboard Marker features a pump-action button that replenishes the marker tip with vivid liquid ink for clear, consistent results. The liquid ink dries quickly and removes cleanly with a dry cloth. The marker also features a visible ink reservoir for monitoring remaining levels and a fine bullet tip for a 1.1mm line width, perfect for fine, precise writing. This assorted hanging pack contains black, blue, red and green markers.