It is a tool for creating 3D application icons. The set includes four basic styles (see preview), each of which contains multiple colors. All objects are resizable without any quality loss, made shapes and packed into Smart Objects.
You can easily change the colors and textures of objects. All layers are available for editing are marked with green marker. You just need to double click on the icon of Smart Objects, which would enter into it to replace the contents.
If you have any questions please write in comments or e-mail.