Shimano XTR ST-M970 Dual Control Left Hand Shift - 3 SpeedShimano XTR ST M970 Dual Control Left Hand Shift 3 Speed For cable actuated brakes, XTR ST M970 Series Multi release shifting allows two gear shifts in either direction Instant release shifts at the first click of the release lever, instead of requiring a click and release of the lever Removable secondary trigger release lever and in line optical gear display Compatible with all 3 speed Shimano mountain derailleurs Dual control 2 finger brake levers