DaMizZa

I just replaced my passenger side end link the other day, does anyone know what the little chrome piece is for? I felt like it should go in that hole opposite the ball joint, but the chrome piece looks threaded and the hole isn't... I feel like that piece should be going somewhere, but I have no idea where. I'm not going to be damaging anything by leaving it off will I?

Edit: I got the Moog black one in the pic, and trying to google what to do with that little piece got me here haha