microSHIFT M21 Rear Derailleur - 6,7 Speed, Short Cage, Black

M21 rear derailleurs are designed to work with 6- and 7-speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs. Robust composite and steel construction Compatible with Shimano 6- and 7-speed mountain and road systems SPECIFICATIONS Color: Black Largest Cog: 32 Rear Derailleur Mount Type: 10x1 Standard Chain Wrap Capacity (teeth): 21 Cage Length: Short Rear Der/Shifter Compatibility: Shimano Mountain , Shimano Road Drivetrain Speeds: 6 , 7 Weight: 241