This spin on the Sign Pen includes a brush tip to keep the water-based ink flowing smoothly. The durable tip produces brush-like strokes, while the richly saturated colors are fully blendable with water and other Sign Pen Brush colors. Dilute the tip in water to get a full range of value and thousands of possible colors. Great for a variety of techniques including feathering, cross-hatching, calligraphy, detailed line work and outlining. Brush tip wipes clean with a paper towel and will not dry out if left uncapped.