The Zimmermann Brake Kit - Front - 138389 is a comprehensive kit designed for the maintenance and repair of a car's front brakes. It includes a variety of products that are essential for ensuring safe and efficient braking performance. The kit contains three main components, including brake pads, rotors, and calipers. The brake pads are responsible for creating friction against the rotors, which helps to slow down and stop the vehicle. The rotors are the circular discs that the brake pads press against, and they are responsible for dissipating heat and providing a smooth surface for the pads to grip onto. The calipers are the components that hold the brake pads in place and are responsible for applying pressure to the pads. Additionally, the kit may also include hardware such as bolts and clips, as well as brake fluid, which is used to transfer the pressure from the brake pedal to the calipers. Overall, the Zimmermann Brake Kit - Front - 138389 is a comprehensive package that provides all the necessary components for maintaining and repairing a car's front brakes.