1The controller shell is made of aluminum alloy, which can protect the internal circuit, has good heat dissipation, and avoid thermal overload. 2The brushless motor controller can provide stable speed, quiet work, sensitive braking control and steering. 3More efficient and more energy efficient. It can automatically recognize the phrase angle and rated voltage of electric bicycles. 4The wires and interfaces are rugged and durable, ensuring longterm use with fewer failures. Each interface has a different color to facilitate your installation. 5Suitable for electric scooters, etc. Condition: 100% brand new Item type:BrushlessController Material:Aluminum alloy Color: As picture shown Size: Approx. 9x5.5x3cm/3.5x2.2x1.2in Weight: Approx. 200g Model: MQ-XCL16 Suitable power: 350W Speed regulation throttle grip: 1.1-4.2V Brake lever: Mechanical normally open 1 xBrushlessController