Shimano SLX RD-M7120 2x12 Speed MTB Bike Rear Derailleur Shadow RD Long Cage Max Cogs 45T

Model: RD-M7120-SGS
Level: SLX
Speed: 12 Speed
Mount: Direct mount
Cage: Long cage
Compatible chain: HG 12-speed 
Total capacity: 45T
Max sprocket: 45T
Min sprocket: 10T
Average weight: 307g
SLX M7100 series of derailleurs deliver advanced shifting performance
Decreased tension in the low gear position and an added bumper on the pulley cage
Larger 13T pulleys increase efficiency and chain management
Extra wide range with front double 36-26T & close step 12-speed drivetrain with low sprocket combination -10-45T