For use with Shimano Dura-Ace Di2 FD-R9150 double front derailleurs.
This Support Bolt & Plate can also be used on the following front derailleurs:
Shimano Ultegra Di2 FD-R8050
Shimano GRX Di2 FD-RX815
These are an "A" match which indicates that the parts are the same in materials, appearance, finish & size etc.
Genuine Shimano replacement part.