The Zimmermann Brake Kit - Rear - 138904 is a comprehensive kit of products designed for use on a car's rear brakes. It includes a variety of essential components to ensure proper function and maintenance of the rear brakes. The contents of the kit include brake pads, brake rotors, and brake hardware. These components work together to provide reliable and efficient braking performance for the vehicle. The kit is suitable for a variety of car models and is a convenient solution for those in need of rear brake replacements or upgrades.