The Genuine Audi Disc Brake Pad Retaining Clips - 4M0615231C are small metal clips designed to hold the brake pads in place on the brake caliper. These clips are specific to Audi vehicles and are made from high-quality materials to ensure durability and reliability. They are an essential component in the braking system, as they keep the brake pads securely in place and prevent them from moving or falling out of the caliper. These clips are an important part of maintaining proper braking performance and should be replaced if damaged or worn out.