Create gorgeous watercolor effects with this bristle brush pen set! Vivid colors blend beautifully, by themselves or with water from the included water brush. Perfect for painting, brush lettering, coloring, sketching, and more. 24 colors. Fine nylon bristle tips. Set includes 1 water brush for blending. Sturdy reusable plastic case keeps pens safe and organized. Case measures 7-1/4'' wide x 7-1/4'' high.