Get endless versatility when drawing or illustrating with Ecoline DuoTip Markers. They have two nibs — a slim bullet and a broader chisel tip — for alternating between fine lines and broader strokes. Filled with concentrated, transparent watercolor paint in brilliant hues, they work well on watercolor paper, drawing paper, and cardboard. - Royal Talens Ecoline DuoTip Markers - Botanic Set of 6Ecoline wc Duotip Marker, BOTANIC 6SET - This set includes one of each of Chartreuse, Carmine, Blue Violet, Light Green, Deep Green, and Sepia.