Shimanos Tourney long cage rear derailleur incorporates advanced Shimano functions and styling that sets the standard for entry level components. TY model comes with resin bracket and plate body for reduced weightZinc plated adjustment screws for corrosion resistanceMegaRange compatible Includes BMX/track frame hanger Color: BlackLargest Cog: 34Rear Derailleur Mount Type: Dropout Claw HangerChain Wrap Capacity (teeth): 43Cage Length: LongRear Der/Shifter Compatibility: Shimano MountainDrivetrain Speeds: 6 , 7