Each crane is rigged and set up so pieces of the crane can be animated. Such as the crane's arm can rotate 360 degrees. The crane's dolly can move back/forth. The crane's hook can move up/down.
Each crane also comes with extension pieces that allow the crane to be made taller.
Each crane comes with a 2048x2048 diffuse texture (with alpha channels).
The triangle counts for each crane are
Crane-1 = 464
Crane-2 = 804
Crane-3 = 1098