FitmentFor 7/8 inch (22mm) handlebarFor Most E-ScooterFor Ridstar Q20/Q20 Lite/Q20 Pro/H20/H26 Pro/H20 Pro E-BikeSpecificationThrottle Handle Length: 13.5cm/5.31inThrottle Cable Length: 156cm/61.42inInstallation Hole DM: 22mm/0.86inColor: BlackPins: 2+3Material: Rubber, ABSPackage: 1x Full Twist Throttle (with 160cm Throttle Cable, 2+3 Pin), 1x Throttle Cover, 2x KeysThis is a non-OEM product, accessory only!Features of E-Bike Throttle HandleThe throttle handle functions as a speed control lever. When rotated, it sends an electronic signal (a varying voltage) to the bike's controller, which then adjusts the motor's speed accordingly. It comes as a full set, including the throttle Handlebar, the throttle cable and 2 Keys.Effects of Failed Throttle Handlebar1.