simple gear ratio Free low-poly (Polygon mesh 3D model) is available on CGTrader for free. Original author: luc-chone. Specs: 361 polys, 742 verts.
BLEND (Blender, filesize: 915 KB), OBJ (OBJ, filesize: 83.3 KB), FBX (Autodesk FBX, filesize: 65.2 KB), GLTF (glTF, filesize: 92.9 KB), STL (Stereolithography, filesize: 72.4 KB)