Bike Rear Derailleur RD-TY21B 6/7 Speed Hanger Mount Derailleur for Mountain Bike Tricycle Commuter Bike Cruiser Bike

[MODEL: RD-TY21B; Bike rear derailleur is compatible with 6/7 speed most kinds of bikes. PERFORMANCE: Durable aluminum alloy material and excellent shifting performance ensure safe and stable riding. WIDE APPLICATION: This bicycle transmission is Suitable for MTB mountain bikes commuter bike cruiser bike folding bike etc. NOTE: The bike rear derailleur is hanger mount not direct mount .Please check the mount type of the original part before purchasing. If you have any questions please feel free to contact us we will provide you with professional services.]