Customer Reviews: What I expectedJuly 9, 2010 Jeffriey(new york, ny) I have a 7.5 Trek FX. After I removed the front derailleur and decided to keep only the rear one the old bolts that were designed to hold to chainrings didn't fit any more, unless I used additional washers, which were a pain in the ass to find.
These bolts solved that problem. I just installed them and they fitted right in. I cannot attest to the quality of the product as I just got it, but it seems to be pretty sturdy.