The Zimmermann Brake Kit - Front - 138673 is a comprehensive kit designed to provide all the necessary components for a front brake replacement on a car. It includes four objects, which are brake pads, brake rotors, brake calipers, and brake hardware. The brake pads are responsible for creating friction against the rotors to slow down the car, while the rotors are the metal discs that the pads clamp onto. The calipers are the part of the braking system that houses the brake pads and applies pressure to them, and the brake hardware includes various small parts such as clips, pins, and springs that are necessary for the proper functioning of the brakes. This kit is suitable for a wide range of car models and is an essential purchase for anyone in need of a front brake replacement.