Check out TwindBricks3D - 66 Technic Gear collection 3D print model 3D model on CGTrader for $3. High-quality mesh by dangmanhvtv. 3D Print Ready.
STL (Stereolithography, filesize: 11.1 MB), OBJ (OBJ, filesize: 33.6 MB), FBX (Autodesk FBX, filesize: 9.1 MB), DAE (Collada, filesize: 27.3 MB), BLEND (Blender, filesize: 32 MB)