Item Type: DC Motor Speed Controller Material: Aluminum Alloy, Plastic Package List 1 x Controller 1 x Finger Grip 1Wide Application: This DC motor controller is suitable for electric cars, electric bikes, electric tricycles, electric motorcycles. It is suitable for all kinds of DC motors and other applications,can regulate the motor speed well. 2Excellent Circuit Board: This DC motor controller is made of excellent quality circuit board for longer service life. It is highly efficient, high torsion, low heat, anti reverse polarity protection, high current protection rated. 3Excellent Aluminum Alloy And Plastic: This DC motor controller is made of excellent aluminum alloy and plastic, which is durable and not easy to be deformed. 4Easy Installation: This DC motor governor is very easy to install, you just need to connect the connector to the corresponding interface. 5Good Performance: This DC motor controller performs very well, the thumb throttle provide stable and responsive speed control, runs well on the right side of the handlebars.