This is a ZBrush Tool file. It contains all the high polygon source models.

For those that don't own ZBrush, there are OBJ versions of all the models in the pack.

These are optional utility textures baked from the high polygon models. They will come in handy should you plan to re-texture any of the models.

Can also be used when tweaking shaders. 

This is a Brush Preset file for ZBrush.  It is a chain brush. 

If you don't own ZBrush, there is a tileable Chain link in the "Blend Files.zip"