Orbea Orca Di2 Rear Derailleur Hanger
The Orca gold/silver Di2 / electronic rear derailleur hanger installs on the bike with one small machine screw (not included, tightened with an Allen key)
The fastening screw is also included (it is not shown in all of our photos)
This derailleur hanger is compatible with 2011-2014 Orca electronic (as opposed to mechanical) frames
Available in 3 colours: Grey, Red and Blue
About the colours:
The blue is a turquoise blue - in our opinion
The grey may be called titanium and looks quite silver
Orbea call this: PATA DE CAMBIO PARA LOS MODELOS ORCA GOLD Y SILVER ELECTRONICO