I thought they were gerfriblets... Ha, but seriously a picklefork and a BFH will get them off. If they dont unthread easily m (one is LHT) then chances are you'll struggle to get one out then the other will snap off. These are cast parts ( tie rod ends) so they will snap if too much force is applied.
Heat, then quenchy with blaster on the male ends of the threads usually works best IMO