This very detailed propeller can fit a lot of purposes. It can be used for wind turbines (perfectly!), planes and other aircrafts, ventilation purposes, etc..
This detailed model will save you a couple of hours of valuable modeling time, believe me!
Besides the standart .3ds and .obj files the .c4d document contains also the environment including lightsetup of the first thumbnail above.
The blades and the mount are single objects so they can be exchanged easily to fit your requirements.

To view the thumbnails above in a higher resolution please download the preview files below.

have fun!