Specifications:Material: Aluminum & PlasticsCompatible with most mountain/hybrid bikes with flat handle bars (Diametmer: 22.2mm)Suitable for MTB / city car / recreational vehicle / road car / folding bikeColor: BlackType: 1 pair(Left +Right Shifter)Mount: left (3 Speed) / right (8 Speed)Size: L 6.2 x W 4.7 x H 4.5 inches1cm=0.39InchesFeatures:- Right shifter is a trigger-type 8 speed shifter,with one lever for down-shifts and a thumb button for up-shifts.- Left shifter is a friction / ratcheting thumb lever for triple cranksets.- For 8 speed indexed SIS shifting. Optical gear display for convenient verification of gear position- It works perfectly for optimum performance and maximum safety and longevity.Package Included:1 pair ShifterNote:- Please allow minor errors due to manual measurement. Thanks for your understanding.- Monitors are not calibrated same,item colour displayed in photos may be showing slightly different from the real object. Please take the real one as standard.