microSHIFT 8-Speed Shimano Compatible Index Kit for Bar End And Thumb ShiftersRepair and conversion parts for microSHIFT thumb shifters and bar end shifters allow you to bring old shifters back to life, or even change the indexing to work with a different number of speeds. Index kit for conversion to 8 speed Shimano compatible shifting Compatible with traditional pull 8, 9, and 10 speed microSHIFT bar end and thumb shifters