This CUES SL-U6000 Rapidfire Plus Mono 2x lever's refined shape and light operation provide riders with a comfortable, easy-to-use interface. Only compatible with LINKGLIDE front derailleurs.Features-ONLY compatible with CUES front derailleurs-Light and responsive front shifting improves efficiency and control-Rapidfire Plus Mono shifts both up and down with a single lever-2-Way Release adds the ability to activate a release shift by pushing with the thumb-1800mm Optislick inner shift cable improves cable routing efficiency and provides excellent corrosion resistance-Clamp band mount typeItem Specifications-Double or Triple:Double-Color:Black-Drivetrain Speeds:10-Drivetrain Speeds:11-Front Der/Shifter Compatibility: Mountain-Shifter Style:Trigger