The Zimmermann Brake Kit - Rear - 138429 is a comprehensive kit designed to provide all the necessary components for a complete brake system overhaul for a car. It includes a set of rear brake pads, brake rotors, and brake calipers. These components are essential for ensuring safe and reliable braking performance. The brake pads are responsible for creating friction against the rotors, which slows down and stops the vehicle. The rotors are the circular discs that the brake pads press against, and the calipers are the mechanisms that hold the brake pads in place and apply pressure to the rotors. This kit is specifically designed for the rear brakes of a car and is suitable for a variety of vehicle makes and models. It is a convenient and cost-effective solution for those looking to upgrade or replace their car's rear brake system.