Features： 1、The controller shell is made of metal. Due to its good heat dissipation function, it can protect the internal circuit and avoid thermal overload 2、The brushless motor controller can provide stable speed and sensitive control of braking and direction change 3、The brushless motor controller of the electric bicycle is easy to install and use. It is very suitable for electric bicycles, scooters, etc 4、LCD backlight display can clearly display status and data. Suitable for 22.5MM handlebars 5、The brushless motor controller is adopted, which is stable and silent and sensitive to the working state of the bicycle Specification： Item Type: Electric Bicycle Instrument Controller Material: Aluminum Alloy Size of Controller Box: Approx. 18.1 x 10 x 3cm / 7.1 x 3.9 x 1.2in Power: 1000W Current Limiting: 38A Package List： 1 x Controller 1 x Grip  1 x Half Handle  1 x Instrument  1x Swivel Grip  1 x User Manual