Marabu Creative Graphix Aqua Pen Metropolitan 6 piece set is ideal for watercolor painting, graphic design - illustration and lettering. Use the two tips (one for contours and the other a flexible brush) to apply color, and then spread the ink with a wet brush. A low-odor formula makes these pens pleasant to use. Never dip Marabu Aqua Pen Graphix pen into water. The set includes Black, Gentian, Light Blue, Aqua Green, Tangerine, and Light Grey.