What are these clips on the trailer brake shoes?

[paulhead]

The shoes are identical to the ones I have now but don't have this round thing and clips.

 

[Clb]

Dickfer

 

[Clb]

Now
Better pics?

 

[paulhead]

Now
Better pics?

Clown

 

[PAE]

Naaaaa even old man Gary can tell thats a henway!!

Dickfer

 

[Clb]

Cam lever and retaining washer.
Do you even wtench bro


Hokay so

 

[paulhead]

My old shoes don't have it. No I don't mess with trailer brakes that much, only when they break down on the side of the road.

 

[Clb]

Here its all I got looking at a 3" screen

 

[total newb]

Irrelivants