Road Bike Bicycle REAR DERAILLEUR GEAR MECH HANGER Tail Hook For BOARDMAN #CC116 Features: 1. Aluminium Alloy Bicycle Bike Derailleur Hanger Hook Rear Gear Accessories 2. High quality material, sturdy and durable 3. Convenient and easy installation 4. picture shows front & back, only 1 item supplied 5. These derailleur hangouts are specific to each bike - please check compatibility. You can use our list below, 6. Derailleur Hanger Bracket Dropout for Bike #CC116 List of compatible Trek bikes Avanti / Blade Team - 2009 / Cadent 1, 2, 3 - 2010 / Cadent 1.0, 2.0, 3.0 - 2011 / Cadent Team 1, 2, 3 - 2009 / Chrono 1, Team - 2011 / Chrono Team 1, 2 - 2009-2010 / Competitor 26 Team - 2011 / Competitor 26.1, 26.2 - 2011 / Quantum 1, 2, 3, Team Series - 2011 / Quantum Team 1, 2, 3 - 2009-2010 / Questa Team 1, 2 - 2010 / Team - 2011 / BOARDMAN / CX Comp 2017 / Road Comp 2016 / ADV 8.8 / ADV 8.9 / ADV 8.8 W / CXR 8.9 / & Others Package Includes: 1 x Bicycle Tail Hook 2 x Screw Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.