The Zimmermann Brake Kit - Front/Rear - 138658 is a comprehensive set of products specifically designed for a car's braking system. It includes six different components, each serving a specific purpose in maintaining the functionality and safety of the brakes. The kit is suitable for both the front and rear brakes of the car, providing a complete solution for brake maintenance and repair. The contents of the kit include brake pads, rotors, calipers, brake lines, brake fluid, and hardware. These products are essential for ensuring smooth and efficient braking, as well as preventing wear and tear on the braking system. This kit is a convenient and cost-effective option for those looking to maintain or upgrade their car's brakes.