Shimano RD-TY300 Tourney Rear Derailleur 6/7 Speed

TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage.

Smooth and confident shifting
Light action shifting for stress-free long riding
Double servo-panta mechanism
Quick and easy assembly
Pre-assembled inner cable fixing nut
Cage Length: Long
Chain Wrap Capacity (teeth): 43 teeth
Drivetrain Speeds: 6, 7
Largest Cog (teeth): 34
Rear Der/Shifter Compatibility: Shimano Mountain
Rear Derailleur Mount Type: Dropout Claw Hanger
Color: Black