Exceptional Performance: The 7/8″ CNC Aluminum Motorized Lever Control adopts professional manufacturing technology, stable and reliable. Designed according to labor-saving, ergonomics principle and comfortable to use. Strict Quality Control: We perfect the quality control system to ensure that the Universal Twist Throttle Grips are of high quality. If you have any product questions, please feel free to ask QA below, we will try our best to help you. Wide Application: Universal Motorcycle Twist Throttle Grips are manufactured according to the original factory specifications and standards, suitable for Motorbike Scooter ATV Motorcross Dirt Bike GY6 Chinese Scooter Dual Cable Throttle. Multi-color Optional: Anodized CNC Quick Twist Throttle Tube is black which is so beautiful Friendly customer service: We are confident the Throttle Handle Grips will give you a excellent usage experience. If you Do not know how to install it, Email me Please.