Empty marker AeroColor Liner Schmincke nº5 Empty marker. They allow the application of Aero Color products without the use of an airbrush. It can be filled by simply removing the cap and filling the valve with a dropper. Includes a label with a small blank frame in which you can write down the number of the color used. Paint capacity: 4.5 ml. Size: 5. Round tip. Line width: 2 mm. Brand: Schmincke.