Ingenious design looks like a brake lever but is actually a shifter. Pushing the lever down with your thumb downshifts, while squeezing the 'brake lever' up shifts. It's a simple as that! the cables and housing exits out of the bottom of the shifter for clean and aerodynamic routing.
This is a great alternative to bar end shifters acting as aero shifters and makes shifting gears a whole lot easier and effortless while in the aero position. These 670-7000 SF-VT-800 shifters are designed to work with Shimano 10 speed drivetrains only but do not work with Dura-Ace 7900 front derailleurs. Get the 670-70001 SF-VT-820 for compatibility with Dura-Ace 7900 front derailleur.