911 Rear Rotor Unknown Object

[born2cruze]

I have taken apart the rear rotors from my 1977 911S and found these clips? in them. They are located beside the parking brake adjustment holes in both.
Picture 1 is the way they were found and picture 2 is the clip pulled out a little.
I have found no information or pictures/part numbers.
What are they for and do I need them?

[Flat6pac]

wheel weights to balance the discs.
Bruce

[born2cruze]

Thanks Bruce,
Since I need new rotors, will they come with them or do I need to buy seperately?
Where would I get them?

[schumicat]

new rotors should come balanced out of the box

Originally Posted by born2cruze

Thanks Bruce,
Since I need new rotors, will they come with them or do I need to buy seperately?
Where would I get them?

[born2cruze]

Thanks guys

[Flat Six]

Originally Posted by schumicat

new rotors should come balanced out of the box

+1

You can just make out the rotor balancing cut in the edge of this disc: