$3 Flying robot Low-poly 3D model by usmannaveedshamas2005. Available on CGTrader. Check it out on CGHub.
STL (Stereolithography, filesize: 620 KB), OBJ (OBJ, filesize: 873 KB), GLTF (glTF, filesize: 466 KB), FBX (Autodesk FBX, filesize: 471 KB), BLEND (Blender, filesize: 1.79 MB), DAE (Collada, filesize: 1.48 MB)