Shimano Dura-Ace ST-R9250-L Di2 Dual Control Shift/Brake Lever for Rim Brakes - Left, 2x, BlackShimano Dura Ace ST R9250 dual control levers are the ultimate in reliable performance thanks to a wired connection to the rim brakes. Refined ergonomics and advanced materials show the race pedigree of these levers. Quick and intuitive 12 speed Di2 shifting Clearly defined click feeling with ergonomic shifting lever Better bike control and confidence in race conditions Hood shape and texture optimize grip and brake power transmission Product