Brand: Shimano Series: ALTUS Model: SL-M310/SL-M370 Speed: Left 3 Speed / Right 8 Speed/Right 7 Speed/Right 9 Speed Weight: ± 263g Colour: Black Applicable caliber: 22.2cm Come with inner shifter cable Specifications: Right shifter is a trigger-type 7/8/9 speed shifter, with one lever for down-shifts and a thumb button for up-shifts. Left shifter is a friction/ratcheting thumb lever for triple cranksets. Features: Lightweight, Useful, Bicycle Parts Size: 15.7cm x 12cm x 11.5cm/6.18"" x 4.72"" x 4.53"" (Approx.) Package Includes: 1 Pair M310 3X7 Speed Shifter/1 Pair M310 3X8 Speed Shifter/1 Pair M370 3X9 Speed Shifter/Left M310 3 Speed/Left M370 3 Speed/Right M310 7 Speed/Right M310 8 Speed/Right M370 9 Speed