It is brand new rear Gear Derailleur Hanger Mech Mech Hanger GIANT Defy Avail Al Gear Derailleur Hanger

Product information: 
1 Cycle frame hanger  Aluminium alloy

 2 frame screws

DUE TO CURRENT SITUATION POSTAGE MAY BE DELAYED

Please check the size and shape before buy as there are a lot different shape in the market 
As long as shape is matching with your exsiting mech, gear frame hanger , it will fit. 

MAKE SURE WHEN SCREWING IN THE FRAME SCREW DOESN'T STOP HANGER FIT IN, PLEASE SEE PICTURE 

PRODUCT INFORMATION 

 
Fits the following models: 

  Defy Alliance - 2009

Defy Aluminum - 2009-2011  and Defy 2.5 

Avail Alliance - 2009

Avail Aluminum - 2009-2011

FCR Alliance - 2008-2009

FCR Aluminum - 2005-2009

OCR Alliance - 2007-2008

OCR Aluminum - 2002-2008

OCR Elite - 2002-2004

TCR Alliance - 2006-2009

TCR Aluminum - 2002-2008

TCR Composite - 2003-2006

TCX Aluminum - 2009+

You can get a special tool exists to measure and correct misaligned hangers, referred to as A DAG - Derailleur Alignment Gauge. 

The derailleur hanger / mech hanger is the part of the dropout that the rear derailleur attaches to. 

In general, steel-framed bikes do not have a removable derailleur hanger, because a steel dropout and hanger is stronger and therefore less likely to be damaged, and also it is more malleable and less likely to work harden during deformation and generally can be bent back into shape without breaking. 

Hangers are sacrificial parts designed to break when the frame and / or drive train are under undue stress, thus reducing / eliminating damage to the frame and drive train components. 

Rear Derailleur Hangers should be fitted by a Qualified Cycle Mechanic and only after the original fault that caused any original hanger to fail has been diagnosed and remedied.

 Most non-steel framed bikes have a separate removable derailleur hanger, generally made from aluminium which is bolted to the dropout. These are intended as a cheap replaceable part so that in the event of an accident or mechanical problem that could damage the derailleur or frame, the derailleur hanger breaks or deforms instead. Sometimes a shear bolt which is designed as a weak point will also be used. There are dozens of different derailleur hangers available and one model is seldom interchangeable with another.