This is a 3D printable sheet metal. Available in ipt,stp and stl versions.
IDW (Autodesk Inventor, filesize: 387 KB), IAM (Autodesk Inventor, filesize: 387 KB), PDF (PDF, filesize: 430 KB), STP (STEP, filesize: 121 KB), STL (Stereolithography, filesize: 207 KB)