Features1Controller shell is made of high quality metal with notch design, which can be used for a long time. 2Heat dissipation function is good, which can protect the internal circuit and avoid thermal overload. 3Brushless motor controller can provide stable speed and sensitive control of braking and direction changes. 4ABS shell is strong and wear resistant, and can be used normally at temperatures from 20 DegreeC to 60 DegreeC. The LCD electric display instrument is small in size and light in weight. 5The wires and interfaces of the brushless motor controller are sturdy and durable, high temperature resistant wiring, easy to install, and safe to use.SpecificationItem Type: Brushless Motor ControllerMaterial: Aluminum Alloy, ABSController Box Size: Approx. 12 x 8.5 x 4.5cm / 4.7 x 3.3 x 1.8inPower: 450W/500W GeneralCurrent: Current Limit 23APackage List1 x Controller1 x Display1 x User Manual