The Zimmermann Brake Kit - Front - 138656 is a comprehensive kit of products designed for the maintenance and repair of a car's front brakes. It includes four different components, each serving a specific purpose in ensuring the proper functioning of the brakes. These components are:

1. Brake pads: These are the friction materials that come into contact with the brake rotor to slow down or stop the vehicle. They are made of high-quality materials and are designed to provide optimal braking performance.

2. Brake rotors: These are the discs that the brake pads press against to create friction and slow down the vehicle. The rotors included in this kit are designed to be durable and provide consistent braking power.

3. Brake sensors: These are electronic sensors that monitor the condition of the brake pads and alert the driver when they need to be replaced. They are crucial for maintaining the safety and efficiency of the braking system.

4. Brake hardware: This includes various small components such as clips, bolts, and springs that are essential for the proper installation and functioning of the brake pads and rotors.

Overall, the Zimmermann Brake Kit - Front - 138656 is a complete package of high-quality brake components that are essential for ensuring the safety and performance of a car's front brakes. It is suitable for various car models and provides all the necessary parts for a complete brake system overhaul or repair.