Brass knuckles Low-poly 3D model is available on CGTrader for $9. Original author: vahantorosyan92. Specs: 12348 polys, 12332 verts.
OBJ (OBJ, filesize: 108 MB), TBSCENE (Marmoset Toolbag, filesize: 108 MB), FBX (Autodesk FBX, filesize: 108 MB), MAX (Autodesk 3ds Max, filesize: 108 MB), MA (Autodesk Maya, filesize: 108 MB), TEXTURES (Textures, filesize: 108 MB)