Roller Paint Brush by ProBrush™ + Free Bonus Chalk ProBrush™ + Bonus Elements
This professional Illustrator brush pack contains 59 high quality handmade roller paint brushes and brush brushes intended for professional designers, illustrators and artists.
Here are 7 demo brushes you could try out before you buy to see how you can implement / test it in your workflow. http://bit.ly/1IwCqhz
1. File is in .zip , sometimes Mac users have problems with unpacking of this bundle. Problem should be resolved by using Zipeg program to unzip the file.
2. Windows users: You need to open them from Illustrator: Brushes - Other Library - find brushes and just click on them.
There is so many Adobe Photoshop brushes but it is really hard to find great Adobe Illustrator brushes.