microSHIFT Right Thumb ShifterImagination is the only limitation to how much the microSHIFT thumbies can do. Their small minimalistic designs are packed with precision machined mechanism that allows you to shift accurately with either index or friction mode. Go on any adventure without worries for mechanical issues. Color Black Rear Der Shifter Compatibility microSHIFT ADVENT, Shimano DynaSys, Shimano Mountain, SRAM X Actuation Drivetrain Speeds 10, 11, 12, 9 Weight 123, 124