The collection consist of 3 differen type of propeller/thruster.
There are 2 models for big propeller.
Each model is moderate detailed.
Polygon counts can be seen in the thumbnail pictures for each model.
OBJ (OBJ, filesize: 10.9 MB), MAX (Autodesk 3ds Max, filesize: 6.95 MB), FBX (Autodesk FBX, filesize: 3.1 MB)