Shimano  XT Dual Control Lever (Mechanical)

Instant Release for quick shifts: An upward motion of the main lever or activation of the secondary lever will release the cable, this has not changed. A click of the upper lever releases the cable, same as it always has. The difference is however that, now the cable is released immediately when the lever is depressed making shifting that much faster.

Features
• Compact design, and ergonomic shaped brake lever
• Multi-Release allows shifts of two gears.
• Shifts multiple gears in either direction using the main lever or the secondary release lever.
• Instant Release for quick shifts
• SIS-SP41 outer casing system & coated stainless steel cable for super smooth shifting.