Description The Robert Axle Project Universal Derailleur Hanger UDH001, designed by SRAM, simplifies the never ending variety of hangers that were all just subtly different into a single unified design. Making it easier for you and bike shops to always have a spare available. The U.D.H. is even better for being precision machined from 6061 aluminium. Modern drivetrains are precise and exacting and deserve to be mounted to a derailleur hanger of equally precise quality. The Robert Axle Project Universal Derailleur Hanger is made to the exact same geometry as the stock SRAM hanger. Ensuring a perfect fit to your bike and any drivetrain you’d like to mount to it. Robert Axle Project Universal Derailleur Hanger UDH001 Features & Specs Machined from 6061 Aluminium Fits all bikes made for SRAM UDH hangers Compatible with all drivetrains, including e-bikes. 12 x 1.0mm thread pitch Works with Trek Active Braking Pivot frame designs. Made in Taiwan