The "Brass knuckles 3D model shop" 3D asset is currently listed under the authorship of "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
STL (Stereolithography, filesize: 3.54 MB), OBJ (OBJ, filesize: 5.4 MB), 3DS (3D Studio, filesize: 488 Bytes), FBX (Autodesk FBX, filesize: 1.86 MB), MAX (Autodesk 3ds Max, filesize: 2.1 MB), GLTF (glTF, filesize: 3.4 MB), USDZ (USDZ, filesize: 1010 KB)