Can someone tell me what these are?

It baffles me how many people don't know about bumper jacks. Didn't they come standard in like every late sixties, seventies mopars and others?

Do you know how many years it has been since any car has come with a bumper jack? I mean at 60 years old, yeah, I understand and have used one more than a couple of times. But since the evolution of rubber bumpers, no one has had to learn how to use one.