Feature: 1. Premium Material: Brush motor speed controller is made of premium aluminum alloy material, anti deformation, protect inner circuit, sturdy and durable. 2. Function: DC motor speed controller will help starting more smoothly, low noise, ensure more comfortable riding and driving safety. 3. Strict Standards: Built to greatly quality control standards, the motor speed controller rated voltage is DC24V, rated power is 800W. 4. Easy Installation: Easy to install, the mounting hole size is M4, direct replacement for the old or damaged one, convenient for using. 5. Wide Application: Electric motor controller fits for scooter, small electric car, cart, electric bike, go kart, electric tricycle, and so on. Specification: Item Type: Brush Motor Speed Controller Set Material: Aluminum alloyMounting Hole Size: M4Rated Voltage of Controller: DC24V Rated Power of Controller: 800W Throttle Grip: 1-4V Lines: 8 groups(battery, motor, charging port, power, brake light, brake, speed control grip, electric door lock) Fitment: Fit for wind turbine scooter, small electric car, mechanical equipment, electric motorcycle DIY engine kit, cart, electric bike, go kart, electric tricycle, DIY engine system, bike parts, even lawn mower and more machinery equipment and so on. Package List: 1 x Brush Motor Speed Controller1 x Throttle Grip Set(2pcs) Note: The battery line of the thick red line is positive, the thick black line is negative, the motor line of the thick blue line is positive, the thick yellow line is negative.