[timaplin]

Does anyone know where I can get a couple of spares of those little black rubber things that sit on the end of the return spring? I was pulling my brakes apart to clean them the other day and managed to have both of them fling off into space

 

[Retro Grouch]

Personally, I wouldn't worry too much about them.

But if you insist, you might want to look for the part here:

http://www.biketoolsetc.com/

 

[timaplin]

you mean run without them? I can call it a weight saving measure...