Flat Top Tower Crane 4 - Construction Crane 3D model is available on CGTrader for $30. Original author: MatViz. Specs: 579424 polys, 549793 verts.
BLEND (Blender, filesize: 37.9 MB), OBJ (OBJ, filesize: 37.9 MB), FBX (Autodesk FBX, filesize: 37.9 MB), TEXTURES (Textures, filesize: 11.3 MB)