The SRAM Universal Derailleur Hanger consolidates thousands of hanger options across the industry.It protects your derailleur against chain jams by pivoting back and out of the way, and slips slightly when encountering impacts out on the trail. Shifting is improved and with higher performance through the cassette too , guaranteeing better alignment, with all drivetrains. Plus, if you ever need a replacement, it will be available everywhere. The Universal Derailleur hanger. One hard working bit of kit!Key FeaturesThe Universal Derailleur Hanger consolidates thousands of mountain bike derailleur standards, so if you cant find a derailleur matching the model of your bike, Srams's UDH is a universal option.It offers unparalleled derailleur protection, with perfect allignment, guranteed.The UDH is designed to rotate rearward in the event of impact and features the ability to “re-rail” the chain back onto the small cog.The UDH works with all commercially available MTB and E-MTB drivetrains from Shimano to Box to Sunrace.