Tombow Dual Brush Pastel Colour 18 Marker Pen Set Double tip marker pens. One tip, nylon fibre pencil type allows for versatile and flexible drawing control just by adjusting pressure on the brush. On the other end of the marker pen, the thin tip is perfect for writing or drawing straight lines. The ink is odourless and water-based, allowing both the mix between them as well as with other water-based marker pens or even oils.   The inks are acid free and non-toxic. Includes: Cool Gray 6 (N60), Cool Gray 1 (N95), Pale Yellow (062), Asparagus (192), Mint (243), Sap Green (245), Sky Blue (451), Process Blue (452), Mist Purple (553), Periwinkle (603), Purple Sage (623), Orchid (673), Pink (723), Carnation Red (761), Blush (772), Coral (873), Pale Cherry (912), Light Sand (990)