The Shimano Alivio SL-M3100 shift lever is characterized by its simple and smooth-running performance. Thanks to the compact Rapidfire Plus Mono construction, the 2-speed shifter features intuitive operation using just a single lever to shift both up and down efficiently. In combination with the proven 2-Way-Release technology cable release is possible by pressing or pulling the lever. The left SL-M3100-2L shifting lever is compatible to 2x9-speed drivetrain systems. Clamp band mounting.