microSHIFT Thumb Shifter Set 8-Speed Double/Triple Shimano CompatiblemicroSHIFT Thumb Shifter Set 8 Speed Double Triple Shimano Compatible Black. Imagination 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. Includes shift cables TECH SPECS Double or Triple Double Double or Triple Triple Rear Der