The Zimmermann Brake Kit - Front - 138373 is a comprehensive set of products designed for use on a car's front brakes. It includes various components that are essential for maintaining and improving the performance of a car's braking system. The kit contains three main items, including a set of brake pads, rotors, and calipers. These components work together to ensure efficient and safe braking, providing the driver with a smooth and responsive braking experience. The brake pads are responsible for creating friction against the rotors, which in turn slows down the car. The rotors are the metal discs that the brake pads press against, and the calipers are the devices that hold the brake pads in place. This kit is a convenient and cost-effective solution for those looking to upgrade or replace their car's front brakes.