1The durable kit is suitable for electric bicycles, scooters, tricycles. 2Professional manufacturing, stable performance, high reliability. 3Fine workman, providing a good using experience. 4Easy to install and simple to disassemble, they are good replacement for your devices. 5Lightweight and stable, without adding any burden on your devices. Item Type: ElectricBicycleBrushedController Material: Metal Color: As Pictures ShownWeight: Approx. 702g/24.8oz How to use: 1. Insert the brake lever function of the controller into the plastic port of the brake lever to complete the brake power-off function 2. Turn the cord into the controller to complete the function of controlling the speed of the controller 1 xController2 xBrake Lever Handle Bar1 xThrottle1 xElectrical Lock2 x KeyPlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.