What do we call these things?

Hey Kurt.
Google doesn't seem to me my pal on this one. I ran the part number, and nothing. Looked in the service manual and couldn't find anything either? From looking at the one I have, I don't think they're symmetrical. Who knows, maybe I have the roller skate and you have the key. I'm going to look around some more, seems strange I'd only have one?
I'm gonna send you a pm. I have some things I am not going to use since I replaced them. Maybe you can get some use from them.
Thanks.
Jim