The Zimmermann Brake Kit - Front/Rear - 138796 is a comprehensive set of products designed to service the brakes of a car. This kit includes five different components, each serving a specific purpose in maintaining the functionality of the brakes. The contents of the kit are not limited to a specific brand, but rather consist of general types of products commonly used in brake maintenance. These include brake pads, rotors, calipers, brake lines, and brake fluid. The brake pads are responsible for creating friction against the rotors, which helps to slow down and stop the vehicle. The rotors are the discs that the brake pads clamp onto, and they are essential for creating the necessary friction. The calipers are the devices that hold the brake pads and push them against the rotors. The brake lines are the hoses that carry brake fluid from the master cylinder to the calipers, allowing for the transfer of pressure to engage the brakes. Lastly, the brake fluid is a crucial component that helps to create the necessary pressure to engage the brakes. Overall, the Zimmermann Brake Kit - Front/Rear - 138796 provides all the necessary components for a complete brake service, ensuring safe and efficient braking for the vehicle.