Throttle lever, twist grip, Left and right hand set. This throttle assembly is commonly used for electric scooters of all sizes. Most commonly (though not exclusively) used for 350W, 500W, 800W and 1000W electric scooters in the 36V and 48V ranges. Popular with many models of Luyuan and Gio scooters (example PB710), as well as many other manufacturer and importer variations.