Hydra attack for 3d printing there is separate version and whole version. There is ZTL, STL , OBJ and 3MF file formats included. This is one of five Hydra models
ZTL (Zbrush, filesize: 166 MB), OBJ (OBJ, filesize: 156 MB), 3MF (3D Manufacturing File, filesize: 176 MB), STL (Stereolithography, filesize: 266 MB)