Ergonomically Designed 10-Speed 105 Dual Control Levers Ergonomic Shift Arc Follows Natural Hand Movement, & Ergonomic Lever Hoods Provide Even More Comfort Robust Internal Mechanism Inward Stroke Distance Is Reduced By 10 Mm For Rapid & Precise Gear Changes Same Effortless Shifting Action & Feel As Dura-Ace Stis For Use With Triple Systems Flightdeck Compatible Comes Complete With Silicon Greased Cables To Further Reduce Shift Friction & Increase Service Life