The Zimmermann Brake Kit is a comprehensive set of products designed for a car's front and rear brake systems. This kit includes six different components, each designed to improve the performance and safety of the vehicle's brakes. These components include brake pads, rotors, calipers, and hardware for both the front and rear brakes. The kit is specifically designed to fit a certain type of car, indicated by the product number 138402, and is suitable for both the front and rear brakes of that vehicle. This kit is a convenient and cost-effective solution for those looking to upgrade or replace their car's brake system.