$8 Sai Blade 3D model by edplus. Available on CGTrader with 17184 polys and 8594 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 363 KB), OBJ (OBJ, filesize: 286 KB), DAE (Collada, filesize: 583 KB), FBX (Autodesk FBX, filesize: 425 KB)