Brushes for Adobe Illustrator come in three types; Art Brushes, Pattern Brushes and Scatter Brushes. They’re all used with the Brush tool, but they each have their specific purpose. Art brushes are the most common, they’re applied to paths and are often used to create realistic hand drawn effects. Pattern brushes are configured to generate seamlessly repeating patterns, which help you easily create intricate designs. Finally, Scatter brushes are commonly used to produce grungy shading effects by painting rough textures onto specific areas of your artwork. Illustrator Brushes are rare resources compared to their Photoshop counterparts, so it’s useful to know where to find them. In this post I present 25 great quality Adobe Illustrator brush sets you can download for free!