Shimano CUES SL-U4000-L Shifter - Left 2-Speed Rapidfire Plus Mono Optical Gear Display BLK ModelNumber=K2680 Its 23mm internal width is

Its 23mm internal width is ideal for wider tires run at lower pressures which helps reduce rolling resistance

Includes Valve Core Removal Tool (integrated into spare alloy cap)

8mm bar clamp diameter

2 Length 110 Bar Clamp Diameter 25

Highly efficient inflation design

Shimano CUES SL-U4000-L Shifter - Left 2-Speed Rapidfire Plus Mono Optical Gear Display BLK ModelNumber=K2680 Its 23mm internal width isThis Shimano CUES SL U4000 Rapidfire Plus Mono 2x shift lever's refined shape and light operation provide riders with a comfortable easy to use interface. Only compatible with Shimano LINKGLIDE front derailleurs. ONLY compatible with Shimano CUES front derailleurs Light and responsive front shifting improves efficiency and control Rapidfire Plus Mono shifts both up and down with a single lever Easily visible gear position indicator option improves