Karambit Free low-poly 3D model is available on CGTrader for free. Original author: OpBing. Specs: 9320 polys, 5012 verts.
STL (Stereolithography, filesize: 455 KB), OBJ (OBJ, filesize: 607 KB), FBX (Autodesk FBX, filesize: 233 KB), PNG (PNG, filesize: 6.03 MB)