This vented dummy coupling is made with durable zinc-plated steel construction, ensuring corrosion resistance. With a 6-1/2" coupling length and an 8-1/2" chain length, it fits most makes and models. Designed for practicality, this product is sold individually and offers excellent durability. Its vented design allows for efficient airflow. Ideal for various applications, this dummy coupling provides reliable performance and long-lasting use.