Water Brush Set includes three water brush sizes. Fine Tip is perfect for details and precision work. Medium Tip is suitable for lettering. Broad Tip is great for adding color to larger areas. This set is ideal for your coloring needs. How to Use: Twist the handle off to open to reveal a refillable water well. Once filled with water and recapped, press firmly on the brush shaft to move the water through the brush tip. For easy clean up, just push the water through the tip and wipe off on a towel or paper scrap. Approximate Size of Each Brush: 0.50 x 7.13 x 0.50 in./1.27 x 11.18 x 1.27 cm.