SRAM GX rear derailleur takes the place of X.9 and X.7 10-speed models and provides shifting speed and precision. FEATURES : Exact Actuation technology eliminates slop and shifting variation Roller Bearing Clutch delivers maximum drivetrain stability even through the most punishing terrain SPECS : Color: Black Largest Cog: 36 Rear Derailleur Mount Type: 10x1 Standard Chain Wrap Capacity (teeth): 30 Cage Length: Short Rear Der/Shifter Compatibility: SRAM Exact Actuation Drivetrain Speeds: 10 Weight: 260