SunRace M57 7/8 Speed Direct Mount Rear Derailleur with adapter
DER SUNRACE RDM57 SGS 7/8s DIRECT BK (L)Model: M57. The SuRace M5 Rear Derailleur is designed for 7 and 8-speed MTB drivetrains. 7/8-speed MTB rear derailleur. Removable hanger included for use with direct mount or hanger mount.