KitAbility BrusH20 Watercolor Paint Brush Set KitAbility BrusH20 Watercolor Brush set includes one each of the four sizes of watercolor brushes. BrusH20 fillable watercolor paint brushes can be used at home or on the go without the worry of spills. Simply fill with water and paint! Set includes four brushes in the detailer tip, medium tip, broad tip, and large tip. Brushes should be filled with water only. Do not fill brushes with paint or any other substance, as this could clog or ruin the brush. Ships in a sturdy, reusable storage box with color chart