what is this on the throttle cable and what does it do????

[Dan95-5.0]

i did the Fox throttle body swap on my 95 mustang and when i got the throttle cable, it came with this round disc. my stock cable doesnt have it.

where does it go and what does it do?

View attachment 516084

thanks

 

[ss93cobra]

I've never seen it on any fox body throttle cable.
TTT for ya though...