Shimano Acera RD-M370 Altus SGS Rear Derailleur - Black, 9 Speed

Altus RD-M370/M310 Rear Derailleurs 11t upper and lower pulleys. 9-Speed. Item Specifications: Color: Black, Largest Cog: 34, Chain Wrap Capacity: 45, Cage Length: Long, Drivetrain Speeds: 9, Rear Der/Shifter Compatibility: Mountain, Rear Derailleur Mount Type: 10x1 Standard,