This model is modeled by SolidWorks. SolidWorks is a software based on Parasolid kernel. The modeling type is NURBS. I convert the modeled files into various formats, including sldprt, STP, IGS, FBX, STL, obj, etc. I hope you like it.
SLDPRT (SolidWorks, filesize: 509 KB), OBJ (OBJ, filesize: 447 KB), FBX (Autodesk FBX, filesize: 144 KB), C4D (Cinema 4D, filesize: 576 KB), 3DS (3D Studio, filesize: 116 KB), STL (Stereolithography, filesize: 210 KB), STP (STEP, filesize: 632 KB)