With a grunge flower motif, this is a great set of crisp, clean mixed-media Photoshop brushes. The brushes were created in Photoshop 7 and range in size from 800px to 100px broad, with grungey and smooth effects. KeepWaiting, a DeviantArt user, claims that they are free for non-commercial usage only.
KeepWaiting is the designer of this piece. It is free to use for personal purposes.
Get it at DeviantArt.