MONTANA BLACK EMPTY MARKERS can be used for detailed sketches, elements, drawings or outlines. Its tip can be exchanged and its pump valve can be removed. So the amount of paint can be individually determined and it’s easy to refill. You can fill the marker up with alcohol or water-based MONTANA INK and PAINT. The acrylic paint or the lacquer as well as the plastic tip can be purchased separately from MONTANA CANS.