3 Speed Shifter: Tourney RS45 Revoshifter offers easy gear shifting at the flick of the wrist ,With easy to read optical gear position display ,front left hand 3-speed indexed shifter.7 Speed Shifter:Tourney RS45 Revoshifter offers easy gear shifting at the flick of the wrist ,With easy to read optical gear position display ,Rear right hand 7-speed indexed shifter.8 Speed Shifter:Tourney RS45 Revoshifter offers easy gear shifting at the flick of the wrist ,With easy to read optical gear position display ,Rear right hand 8-speed indexed shifter.