Wheels Manufacturing hangers are stiffer than almost any OEM hanger, which improves durability and shifting performance. - 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 - Effective August 2018: These hangers DO NOT INCLUDE attachment hardware. Please see related items for suggested bolts - CNC machined 6061 aluminum - Black anodized finish - Made in the USA - Thru-Axle mount type with (2) M3x8mm Socket Head Screws