The Shimano 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 Shimanos 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 thumbSpecifications:Color: Black Drivetrain Speeds: 9Rear Der/Shifter Compatibility: Shimano Mountain Shifter Style: Trigger