My new to me rear sets just arrived. I'm trying to figure out the over engineered brake set up. I've got most of it - except for this do-dad. Anyone know where it goes? It's got 3 holes, two the same size and one larger. The large one has wear marks on both sides, so it seems like it was part of a moving assembly... maybe.
Also, anyone got good shots of these Rearsets installed on a bike - a little reference wouldn't hurt.
![](http://yuu.smugmug.com/photos/961699501_iDDVU-O.jpg)