This double-headed brush-pen is ideal for illustration, sketching, coloring and design work. It features a flexible brush tip on one end for painterly strokes and a fine tip on the other for fine details. The fast drying ink will not smudge and is blendable for a vibrant, vast array of color! This set includes a blender, light sand, sand, burnt sienna, saddle brown, redwood, dark ochre, warm gray 5, warm gray 1, warm gray 8, warm gray 2, cool gray 5, cool gray 1, cool gray 6, cool gray 3, cool gray 8, cool gray 10, cool gray 12, lamp black and black.Details:Includes assorted colors20 brush pensTwin tips; brush and fineWater-based inkNontoxicAcid free