22 vector grunge lines. On preview picture they presented as a horizontal lines, but also they can be rotated any direction. Easy to use to decorated your art design project. Grunge is a nasty and sometimes ugly style in design, but it gives a more realistic look. Even few elements of grunge style can change perception of your Illustration. Most often used details in this disgusting art are: splatters, half-tone, splats, drips.
I myself prefer to use Illustrator CS (or higher), but you always can use your favorite software for editing vector files, for example, Ventua Publisher, Corel Draw, PMView, Macromedia Freehand, Xara.