The Zimmermann Brake Kit is a comprehensive set of products designed to service the rear brakes of a car. It includes four different components, each with a specific function in maintaining and improving the performance of the brakes. These components are not specified by brand name, but are described by their general type. The kit includes a set of brake pads, which are essential for creating friction and slowing down the vehicle when the brakes are applied. It also contains two brake discs, which are the circular metal discs that the brake pads press against to create the necessary friction. Additionally, the kit includes a set of brake calipers, which are the components that house the brake pads and press them against the discs. Lastly, the kit includes a set of brake sensors, which monitor the condition of the brake pads and alert the driver when they need to be replaced. Together, these components make up the Zimmermann Brake Kit and provide a comprehensive solution for maintaining the rear brakes of a car.