microSHIFT Bar End Shifter Set, 9-Speed Road, Double/Triple, Shimano Compatible, SilvermicroSHIFT bar end shifters can work on TT bikes, commuter bikes, mountain bikes, and even work as down tube shifters. These versatile shifters have CNC machined mechanisms that result in crisp shifting's you will love. Product Details: Expander plug compatible with handlebars with internal diameter of 19 21mm Specifications: Double or Triple: Double Double or Triple: Triple Drivetrain Speeds: 9 End Type: Shimano SRAM Front Der Shifter Compatibility: