Feature:1. The controller shell is made of aluminum, which can protect the internal circuit, and with good heat dissipation to avoid thermal overload.2. The wires and interfaces of the controller are sturdy, ensuring a low failure rate during long‑term use.3. Practical accessory for electric bicycles, electric tricycles, electric scooters, wide range of application.4. Offering steady and sensitive control of speed, which has professional and reliable performance.5. The installation is simple and does not require complicated operations, save your time and effort.Specification:Condition: 100% Brand NewItem Type: Brushed Controller + Throttle GripMaterial: Aluminum + PlasticController Size: Approx. 8.5 x 6.2 x 3.4cm/3.3 x 2.4 x 1.3inAmount Voltage: DC24VAmount Power: 500WUndervoltage: 20±0.5VHandlebar: 1-4VHandlebar Wire Length: Approx. 2.19 meters/7.2ft Package List:1 x Controller 1 x Throttle Grip