Electric Scooter, Electric Bike, And Topincn Thumb Throttle Speed Control Lcd Product Features ?PRACTICAL INTUITIVE? The grip can do real-time digital voltage display, intuitive and convenient, and you are able to accurately determine the remaining power. You can early judge whether the battery is damaged and do the maintenance job or not according to the voltage display. ?UNIVERSAL DESIGN? Its universal design can be applied to various electric bikes with voltage varying from 12 to 99V, with no limitation to the battery types. ?WIDE APPLICATION?The Thumb Throttle Grip is suitable for electric bike, scooter , tricycle, and other electric vehicle. An ideal choice to meet all your Needs. ?CONVENIENT INSTALLTION? This Bike Throttle Grip is compatible with most electric bike with 22.5 mm handlebar. The wires and interfaces are durable, and ensure low malfunction during the long time use. Easy to install and use. ?SPEED CONTROL? The e-bike thumb throttle is fine designed, providing sensitive and steady control of speed, working well on the left or right side of handlebar. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!