The Zimmermann Brake Kit - Rear - 138461 is a comprehensive kit of products designed for the maintenance and repair of a car's rear brakes. It includes a variety of high-quality components, carefully selected to ensure optimal performance and durability. The contents of the kit are as follows:

1. Brake pads: These are the friction materials that come into contact with the brake rotors to slow down or stop the vehicle. They are made of a durable compound and are designed to withstand high temperatures and heavy use.

2. Brake rotors: These are the discs that the brake pads clamp onto to create friction and slow down the vehicle. The rotors in this kit are made of high-quality materials and are precision-machined for smooth and efficient braking.

3. Brake hardware: This includes all the necessary clips, pins, and springs that hold the brake pads and rotors in place. These components are crucial for proper brake functioning and wear evenly.

4. Brake lubricant: This is a special grease that is applied to the brake hardware to prevent squeaking and ensure smooth movement of the brake components.

5. Brake cleaner: This is a solvent used to clean the brake components and remove any built-up dirt, grime, or brake dust. It helps to maintain the effectiveness of the braking system.

Overall, the Zimmermann Brake Kit - Rear - 138461 is a comprehensive and essential kit for maintaining and repairing a car's rear brakes. It includes all the necessary components to ensure safe and reliable braking performance.