The BOX Four 8-Speed Shifter takes advantage of the "less is more" drivetrain philosophy and exploits durability, simplicity, and reliability.Single shift option is recommended for eBike useEngineered with BOX's "8 is Enough" drivetrain philosophyExtruded clamp2-piece pull leverResin top shellFast action release leverItem SpecificationsColorBlackDesigned for ebikeYesDrivetrain Speeds8Rear Der/Shifter CompatibilityBOX 8-SpeedShifter StyleTrigger BOX Four 8-Speed Shifter Shifter, Flat Bar-Right UPC: 616043832258