How to Use Remove the dirty brake fluid from the reservoir. Put in the new return fluid. Start the car and connect the hose between the equipment and the auxiliary brake pump. Turn the screw to loosen it, but not completely. Then open the valve to start siphoning the fluid. Please close the valve after screwing to the end. Easy to Use This brake bleeder kit is easy to use. With the help of our tool, one person can finish the replacement work without dirty oil stained on the floor. Only one person can finish the brake fluid replacement work. You can use the tapered nozzle which is offered in the package to avoid air leakage. Creative and Effective Method With this brake bleeding device, you can forget about the traditional methods of changing brake fluid. Changing brake fluid will never be tiring or boring again. Please lift tool over the brake pump to ensure it works properly. Clean and Eco-Friendly With our brake bleeder, you no longer need to worry about whether the oil is harmful