So. What am I?

[E1]

Doing a little spring cleaning, found this little guy.

Pretty sure several of the V6 folks will recognize this - please give the V8 folks a chance at it.

What am I ?

 

[rubydist]

yup, I know what it is...

 

[99sho-time]

goes on the big spinny thing that the rods connect to and prevents to much side to side dancing?