NEW Shimano Altus RD-M310 7/8-Speed Long Cage Rear Derailleur Black

Shimano Altus RD-M370/M310 Rear Derailleurs Rear Derailleur Mount Type: 10x1 Standard Rear Der/Shifter Compatibility: Shimano Mountain Cage Length: Long Drivetrain Speeds: 7 Drivetrain Speeds: 8 Weight: 326 Color: Black Chain Wrap Capacity (teeth): 43 Larg