The Zimmermann Brake Kit - Front/Rear - 138678 is a comprehensive kit of products designed to service the brakes of a car. It includes six different components, each serving a specific purpose in maintaining and improving the performance of the vehicle's brakes. The kit contains a set of front and rear brake pads, which are essential for creating friction and stopping power when the brake pedal is pressed. It also includes a set of front and rear brake rotors, which work in conjunction with the brake pads to slow down and stop the car. Additionally, the kit contains a set of front and rear brake wear sensors, which are responsible for detecting when the brake pads need to be replaced. These components are essential for ensuring the safety and reliability of a car's braking system. Overall, the Zimmermann Brake Kit - Front/Rear - 138678 is a comprehensive and convenient solution for maintaining and improving the performance of a car's brakes.