SRAM 2012+ Red 10 Speed Medium Cage WiFli Rear Derailleur

Features of the SRAM 2012+ Red 10 Speed Medium Cage WiFli Rear Derailleur Carbon fiber and aluminum construction Ceramic bearing pulleys Titanium hardwAre Compatible with other SRAM 10-speed drive train components Rear Derailleur Mount Type, 10x1 Standard Color, Silver/Black Largest Cog, 32 Chain Wrap Capacity (teeth), 37 Drivetrain Speeds, 10 Rear Der/Shifter Compatibility, SRAM Exact Actuation Weight, 151 Cage Length, Medium