With a single sided nylon bristle brush tip ZIG Clean Color Real Brush is a water-based dye with a range of 80 colors. Featured the ZIG Arts Crafts line the nylon bristle brush is small and very flexible with great elasticity making it easy to go from thin too thick lines in one stroke.Clean Color Real Brush is expanding into all types of art forms including: scrapbooking rubber sting illustration cartooning fine arts brush lettering and one of the most popular card making. When paired with ZIG Blender or ZIG BrusH2o there�s endless possibilities when it comes to blending.Blending Tips:Taking two ZIG Clean Color Real Brush pens for a few seconds gently touch nib-to-nib. Keep the two pens horizontal and ink will flow from the top pen onto the tip of the second pen. After using the blended pen clean excess ink off onto a piece of scrap paper or towel. Another blending technique take a ceramic or plastic dish and brush a color straight on to the dish. Taking another color (preferably a lighter one) grab the color in the dish and brush away.