Without you telling us, we can surmise you were towed because a wheel fell off. Those are snapped lug studs. Someone went Schwarzenegger while tightening them, or you ran them for a couple hours while they were loose.

4 broken wheel studs and 1 about to break.

Don’t usually see them like that as they are press fit into the wheel hub assembly and take a considerable amount of force to get them out. But yes they are wheel studs that have snapped off.