Sunlite Derailleur Hanger S-303

6061 Forged Alloy. Made to O.E.M. specifications. Correct hardness to reduce damage to frame upon impact. Includes mounting bolt. Fits some Cannondale GT. Axle Thread M12x1. Compatibility:. Cannondale: Beast of the East 2016-17 / Slate 2016-19 / SuperX series 2017-21 / Synapse Crb Disc Carbon 2018-21 / Synapse Hi-Mod Disc 2018-21 / Synapse Neo AL 2019-21 / Topstone AL 2019-22 / Topstone Neo CRB 2021 / CAAD13 2019 / Quick Neo 2019-21 / F-Si HM 2019 / F-Si Crb 2019 / CADDX 2021 / SystemS. GT: Grade AL 2020 / Grade Carbon 2020-21 / GTR 2019-21