Driveshaft query - Help!!

[Jam-Speed]

Hi
I have just got the re-conned driveshaft i ordered through wilco.

I have noticed that it does not have the round sort of ball thing, the other one has on it

What is the round thing?

Will it matter if i fit the shaft without it?

thanks

 

[davebem]

Not sure what you mean, which side are we talking about??