Features1Safe And Reliable: This brush motor speed control controller is highly efficient, high torsion, low heat, with anti reverse polarity protection, high current protection rating. 2Good Adaptability: This electric bike motor brush speed controller is well adapted to a variety of DC motors and other applications, and can regulate the motor speed well. 3Easy Installation: The brush motor control box come with a 410 chain and a 13T sprocket, providing the necessary components for upgrading your electric vehicle. It is suitable for DIY enthusiasts and professional mechanics alike. 4Wide Application: This brush motor speed controller has a wide range of applications and can be used for electric bikes, electric tricycles, electric motorcycles. 5Durable And Sturdy: The motor engine speed controller is made of durable aluminum alloy and plastic materials, ensuring long lasting performance. It is compatible with various DC motors and other applications.SpecificationItem Type: Brush Motor Speed ControllerMaterial: Aluminum Alloy, PlasticPackage List1 xBrush Motor Speed Controller1 x Sprocket1 x Chain1 x Switch