This product is available as a Collada, Wavefront, and Stl files. There are TWO Blender files that come with this purchase. One is an unrigged static model, great for closeups. The other Blender model is rigged. Turning the piston flywheel will turn the transfer gears, drive wheels and the front wheels. The Blender model contains 10 objects, 322k vertices, 658k edges, 340k faces and 610k Triangles.