$23 TELESCOPIC MOBILE CRANE CRAWLER LIFTING TRUCK GIRDER OVERHEAD 3D model by SURF3D. Available on CGTrader with 124488 polys and 122361 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 5.94 MB), OBJ (OBJ, filesize: 11.8 MB), 3DM (Rhinoceros 3D, filesize: 68.3 MB), BLEND (Blender, filesize: 11.8 MB), DWG (AutoCAD, filesize: 36.9 MB), 3DS (3D Studio, filesize: 4.02 MB), IGE (IGES, filesize: 64.9 MB), SAT (3D ACIS, filesize: 41.5 MB), STP (STEP, filesize: 29.8 MB), OTHER (Other, filesize: 29.8 MB), SKP (Sketchup, filesize: 17.2 MB), MAX (Autodesk 3ds Max, filesize: 43.1 MB), FBX (Autodesk FBX, filesize: 3.85 MB)