Up for sale is one Eclypse #121 Rear Derailleur Bike Hanger - GH-041 - It should fit the following bikes, but please refer to the picture before buying. 

Opera

• Canova -

Pinarello

• F3:13 -
• F4:13 -
• FP5 -
• FP6 - 2009
• Paris Carbon - 2006-2007

Stevens

• SLR Aero - 2012