Give your artwork a burst of color with these dual brush pens from Tombow. They sport fine and brush tips for minute details and broad strokes. With the blender pen, you can blend shades to achieve subtle shaded effects. Set colors include Rubine Red, Hot Pink, Orange, Process Yellow, Chartreuse, Willow Green, Reflex Blue, Purple, Imperial Purple and a colorless blender. Details: Includes assorted colors 9 packs (10 pens per pack, 90 total pens) Dual brush and fine tips Blendable, water-based ink Long-lasting nylon brush tip Self-cleaning tips Acid free and odorless Conforms to ASTM D-4236