Item DescriptionDi2 electronic satellite shifter that easily mounts near the top center of your road barsQuick, effortless electronic push button rear shiftingUnder-the-tape routing for shifter wiringCompatible with Dura-Ace 9070 and Ultegra Di2 6070 E-tube electronics systemsItem Specificationsspeed: 10/11spF/R: rearweight: 30gcolor: black/grey: