$15 Rail fastening D-65 3D model by Dufe. Available on CGTrader with 33704 polys and 16732 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 1.61 MB), OBJ (OBJ, filesize: 3.84 MB), IGE (IGES, filesize: 1.1 MB), FBX (Autodesk FBX, filesize: 1.01 MB), DWG (AutoCAD, filesize: 1.44 MB), STP (STEP, filesize: 724 KB), IAM (Autodesk Inventor, filesize: 189 KB), MAX (Autodesk 3ds Max, filesize: 3.5 MB)