It's not the clutch push rod one Erik.
I guess that was a 10 cent coin and that would go through the hole.
I'm at a loss, I cant find anything that small that I can compare it to.
I took a couple of pictures (not very good) in my new build room after I finnished measuring.
See them here..
http://forums.sohc4.net/index.php?topic=113999.0
Sam.