The Zimmermann Brake Kit - Rear - 138780 is a comprehensive kit of products designed for use on a car's brake system. The kit includes various components that are necessary for the proper functioning and maintenance of the rear brakes. These components may include brake pads, rotors, calipers, and hardware such as clips and shims. The kit is specifically designed to fit a certain make and model of car, ensuring compatibility and optimal performance. It is an all-in-one solution for replacing or upgrading the rear brakes on a vehicle. The contents of the kit are carefully selected to provide high-quality and reliable parts that will effectively improve the braking performance of the car.