Any Wrenches?

[WindingRoad]

So I'd like to buy Velo's derailleur she's selling if it would work on my bike. She has this: Ultegra Front Derailleur (FD-6600), Clamp-on, 31.8. Here's a pic of what my current set up is. I'm running a compact double on the front but since moving to a hilly place the triple derailleur isn't working so well. I'd love to buy her derailleur and have a matching Ultegra set but do you think it will work?