Shimano Acera M360 SGS Rear Derailleur for 7,8 speed drivetrains. 

• Color: Black
• Largest Cog: 34
• Rear Derailleur Mount Type: 10x1 Standard
• Chain Wrap Capacity (teeth): 43
• Cage Length: Long
• Rear Der/Shifter Compatibility: Shimano Mountain
• Drivetrain Speeds: 7 , 8
• Weight: 340g