3D Flywheel 21 (Polygon mesh 3D model) is available on CGTrader for $39. Original author: 3D-Horse. Specs: 322922 polys, 326441 verts.
OBJ (OBJ, filesize: 19.3 MB), MAX (Autodesk 3ds Max, filesize: 25.8 MB), LWO (Lightwave, filesize: 5.5 MB), 3DS (3D Studio, filesize: 3.85 MB), MA (Autodesk Maya, filesize: 20.7 MB), HRC (Autodesk Softimage, filesize: 14 MB), C4D (Cinema 4D, filesize: 4.05 MB), FBX (Autodesk FBX, filesize: 32.2 MB), UNITYPACKAGE (Unity 3D, filesize: 32.2 MB)