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.