The Altus SL-M2010 Shifter offers light shifting operation, wide compatibility options, and is suitable for internal cable routing.Features-Slim main lever body-Numbered gear display is positioned below the handlebar and indicates gear position at a glance-'s OPTISLICK cables feature a minimal and uniform electrically coated layer that improves cable routing efficiency and provides excellent corrosion resistance-RAPIDFIRE PLUS technology is suited to quick shifting, giving riders the ability to downshift three gears in one stroke-2WAY-RELEASE means shifts can be released by pull of the index finger or push of the thumbItem Specifications-Rear Der/Shifter Compatibility: Mountain-Shifter Style:Trigger-Color:Black