Improve shifting accuracy with a new Derailleur Hanger with 2 Fasteners. OEM hangers are only produced by a handful of manufacturers, mostly in Taiwan and China. As a result, you will see many bikes with exactly the same hanger. Bicycle manufacturers may make mid year changes. Please use the hanger photos to select the proper hanger for your application.. These hangers come with necessary mounting hardware. CNC machined 6061 aluminum. Black anodized finish. Made in the USA. Item Specifications: Fits Brand: Giant,