What's this common hardware?
 

What is this called?
I need it to put on a 1/4" rod (or about that...) so it is small.
http://i54.tinypic.com/2mg8hs6.jpg

Heim Rod End, or Heim joint

yes.. yes thank you very much!

i remember buying these in the hardware store when i was a little kid pretty cheaply. I assume the have different grades etc.

Thanks again.