The Shimano M7000 SLX I-Spec Shifter is a tough, aggressive and lightweigh left hand shift lever with vivid indexing and 2-way release function. Shimano M7000 SLX I-Spec Shifter Features Light to the touch but positive and crisp, Vivid indexing provides a constant amount of shift lever force 2-way release allows shifting from various riding positions; the upper lever still performs the same shift function, but it can now swing in either direction allowing it to be released by the thumb or index finger Pod design allows the use of these shifters with any brake I-spec-B lever Removable optical gear display with integrated cover allows the use of these shifters with any brake lever Barrel adjuster for fine gear tuning Complete with inner and outer cables 2nd generation I-spec-B design is developed to attach directly to I-spec-B brake levers