What is this part called?

Well, some days I'm smart and most i am not! Went to lift the rear of the Nova up and I decided to use a lift point that I thought was a good one to lift the entire rear of the car (without using the differential).

On its way up I heard/saw a noise and here is what I discovered (see pics).

What is this piece called? Every search I tried on classic industries did not produce this component. Any ideas out there? Yes, I know I can bend it back.