SL-M3100-L SERIES:SHIMANO ALIVIO M3100 Series Color:Series color Clamp band:✔ Front speeds:3 Optical Gear Display:✔ SL cable adjust:✔ Shifter type:RAPIDFIRE PLUS SL-M3100-R SERIES:SHIMANO ALIVIO M3100 Series Color:Series color Clamp band:✔ Compatible RD Type:MTB 9-speed Max. multiple shifts (Main lever/ rear):3 Optical Gear Display:✔ Rear speeds:9 SL cable adjust:✔ Shifter type:RAPIDFIRE PLUS Package Including: - 1pc M3100 Shifter Lever Left 2S/3Sonly or - 1pc M3100 Shifter Lever Right 9s only Need to choose