Universal: 7/8 inch throttle control for e-bikes and scooters, suitable for most e-bikes with hall sensor controller. Accessories: this set of 22mm thumb throttle can work at any voltage (24V 36V 48V 60V 72V etc). High quality ensures long service life. High Quality: The thumb throttle set is made of high quality plastic and metal materials, which are impact resistant, sturdy and wear resistant. wear, practical and reliable. Easy Installation: If your handlebar diameter is 22mm, the thumb throttle assembly fits and can be installed quickly. Please confirm the size before purchasing. Service Guarantee: If you have any questions or are not satisfied with the product, you can always contact our customer service. Our team will get back to you within 24 hours. Product Motorcycle Handlebar Grips Fitment: For Electric Bike Electric Scooters