for Bicycle Shifter Button Di2 Ultegra Dura-ACE 6870 8050 9070 9150 8150 8170 9250 9270 TT Triathlon Base Bar Sprint Shifter

specifications: 1. Sprint button, installed in the lower position; 2. Climb button, installed in the upper position; 3. Sprint + climb integrated button, installed in the upper and lower handle position. 4. Rest button, installed in the rest button.

• All buttons in this link must be inserted into Hand transformation. Insert Hand transformation third hole at 11 speed and Hand transformation second hole at 12 speed.
• You cannot insert the controller or any transformations. You must insert the Hand transformation to use it.
• After receiving the goods, please first test whether it can be used normally. Once the car is loaded and wrapped, it will not be returned
• The installation can only be inserted into the bottom hole of the hand panel, and cannot be inserted into other holes or controllers
• Installation: The product is easy to install, you can directly disassemble your broken components, then install this product can be