The Zimmermann Brake Kit - Front - 138283 is a comprehensive set of products designed to service the front brakes of a car. It includes four individual components, each with a specific function in maintaining the brake system. The first component is a set of brake pads, which are responsible for creating friction against the brake rotors to slow down or stop the vehicle. The second component is a pair of brake rotors, which are circular discs that rotate with the wheels and work with the brake pads to stop the car. The third component is a set of brake sensors, which detect when the brake pads are wearing down and need to be replaced. The final component is a set of brake hardware, which includes various clips, pins, and springs that help to secure the brake pads and rotors in place. Together, these components make up the Zimmermann Brake Kit - Front - 138283 and provide all the necessary parts to maintain the front brake system of a car.