$35 Gears 12T-36T-60T 3D model by laythjawad. Available on CGTrader with 2243 polys and 2908 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 1.75 MB), OBJ (OBJ, filesize: 1.1 MB), C4D (Cinema 4D, filesize: 1020 KB), 3DS (3D Studio, filesize: 595 KB), DXF (DXF, filesize: 1.78 MB), FBX (Autodesk FBX, filesize: 385 KB), ABC (Alembic, filesize: 575 KB)