Shimano Altus SL-M315-7R 7-Speed Right Rapidfire Plus Shifter - The Shimano Altus SL-M315 Shifter offers light shifting operation, wide compatibility options, and is suitable for internal cable routing.2WAY-RELEASE means shifts can be released by pull of the index finger or push of the thumbNumbered gear display is positioned below the handlebar and indicates gear position at a glanceRAPIDFIRE PLUS technology is suited to quick shifting, giving riders the ability to downshift three gears in one strokeShimano's OPTISLICK cables feature a minimal and uniform electrically coated layer that improves cable routing efficiency and provides excellent corrosion resistanceSlim main lever body