The Zimmermann Brake Kit - Rear - 138908 is a comprehensive kit of products designed to service the rear brakes of a car. It includes a variety of high-quality components that are essential for maintaining and improving the performance of the vehicle's braking system. The kit includes brake pads, rotors, and calipers, as well as all necessary hardware and accessories for installation. The brake pads are responsible for creating friction against the rotors, which in turn slows down and stops the car. The rotors are the metal discs that the brake pads press against, and the calipers are the hydraulic devices that squeeze the brake pads against the rotors. Together, these components work to ensure safe and effective braking for the vehicle. This kit is suitable for a variety of car models and provides all the necessary parts for a complete rear brake overhaul.