The Zimmermann Brake Kit - Rear - 138877 is a comprehensive kit of products designed for the rear brakes of a car. It includes a variety of essential components that work together to ensure safe and efficient braking performance. The contents of the kit may vary, but typically include brake pads, brake rotors, and brake calipers. These components are designed to fit a specific make and model of car, ensuring proper fit and function. The brake pads are responsible for creating friction against the brake rotors, which in turn slows down the vehicle. The brake calipers house the brake pads and are responsible for applying pressure to the pads. This kit is designed to provide all the necessary components for a complete rear brake replacement, making it a convenient and cost-effective option for car owners.