Design & Create—Draw, Write & Paint. Seamless switch from fine detailed work to wider outlining, coloring and shading with Staedtler® Double-Ended Watercolor Brush Pens. Packing the performance of watercolor paints and brushes into a convenient, easy-to-control pen-style marker format, they're ideal for adding watercolor effects without the hassle, without the mess. Flexible brush tips on both ends of each pen deliver excellent line-width versatility, making Double-Ended Watercolor Brush Pens ideal for paintings, illustrations, lettering and a wide variety of mixed-media projects. Marker Ink Type: Washable; Marker Tip Type: Brush; Marker Tip Size (text): Fine/Medium; Marker Tip Size (numeric): Assorted.