Features1Universal: This brushed motor speed controller has a wide range of applications, which is suitable for electric bikes, electric tricycles, electric motorcycles. 2Aluminum Alloy Shell: The controller shell is made of aluminum alloy, which can protect the internal circuit, has good heat dissipation and avoids thermal overload. 3Function: This speed controller is a brushed motor controller that provides constant speed, sensitive braking and commutation control. 4Durable: The cables and connectors of this brushed motor speed controller are durable and ensure low defects for long term use. 5250W: The rated voltage of the speed controller box is 12V, and the rated power is 250W which is great choice for replacing you old controller.SpecificationItem Type: Brushed Motor Speed ControllerMaterial: Aluminium alloyGross Weight: 110g/3.9ozRated Voltage: 12VRated Power: 250WUndervoltage: 8.50.5VTurn Bar: 1-4VPackage List1 xBrushed Motor Speed Controller Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.