Wolf Tooth Roadlink Direct Mount

* Offsets the position of your road derailleur to make it possible to run a wide-range mountain bike style cassette* Optimized for use with eleven-speed 11-36t, 11-40t and 11-42t cassettes* Fits Shimano Dura Ace R9100 and R9150, Ultegra R8000 and R8050, Ultegra RX RD-RX800 and RD-RX805 and 105 R7000 derailleurs* The Roadlink DM replaces the direct mount link on the derailleur itself and is compatible only with standard derailleur hangers