Great for a variety of techniques including feathering, cross-hatching, calligraphy, detailed line work and outlining, this Sign Pen features a flexible and durable tip that produces brush-like strokes. Personalize letters, create beautiful works of art and add a touch of creativity to journals or notes. Because the richly saturated colors are fully blendable with water and other Sign Pen Brush colors, you can combine colors for striking or subtle effects. Dilute the tip in water and explore a full range of value and thousands of possible colors; the tip wipes clean with a paper towel.Details:BlackBrush tipWater-based inkAcid freeFade proof and water resistantWill not dry out if left uncappedConforms to ASTM D4236