The Zimmermann Brake Kit - Rear - 138393 is a comprehensive kit designed for use on cars. It includes various components that are essential for the proper functioning of the car's brakes. The kit contains a set of rear brake pads, brake rotors, and brake calipers. These components work together to provide efficient braking performance and ensure the safety of the vehicle. The brake pads are made of high-quality friction material that is designed to withstand heat and friction, providing long-lasting performance. The brake rotors are durable and designed to dissipate heat quickly, preventing brake fade. The brake calipers are responsible for applying pressure to the brake pads, which then press against the rotors to slow down the vehicle. This kit is suitable for use on the rear wheels of the car and is compatible with a wide range of car models. It is a convenient and cost-effective solution for those in need of a complete brake system overhaul.