$2 Sai Knife Low-poly 3D model by notnowjohn. Available on CGTrader with 13700 polys and 6900 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 10.7 MB), OBJ (OBJ, filesize: 11.1 MB), BLEND (Blender, filesize: 13.7 MB), DAE (Collada, filesize: 12.6 MB), FBX (Autodesk FBX, filesize: 10.7 MB), GLTF (glTF, filesize: 7.08 MB)