1. Size Compatible: The twist throttle is compatible with most electric bicycles, most adult electric bicycles, electric mountain bikes, folding bicycles and some electric vehicles can be used. 2. Voltage compatibility: suitable for 12V/24V/36V/48V/60V/72V electric bicycle or electric scooter controller, it is a high-quality riding accessory 3. Easy Installation: Stable and Sensitive Speed Control - The electric bicycle throttle handle can provide stable and sensitive speed control, and it works well on the right side of the handlebar. Colour:Black Material:ABS Package Contents: 1 pair x Electric Bike Throttle grip Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.