Shimano 7900 Dura Ace 31.8mm Derailleur Front IFD7900BM

Stiffer solid wide link
Optimized spring tension
Cage profile eliminates trimming on the large ring
Chrome plated steel cage
Black/Silver two tone alloy body
For standard or compact cranks
Bottom swing, bottom pull
16t cap., 50-56 tooth
09 DURA ACE 10SPD*, FITS STD AND COMPACT, IFD7900BM,