The Roadworks Peterbilt Shock/Air Bag Covers for 387/587 Sleepers are a practical and durable solution for concealing shocks and air bags on your Peterbilt truck. Made of stainless steel and sold as a kit of 2 pieces, these covers are easy to install using factory bolts and additional screws. The upper piece conceals shocks, while the lower piece conceals air bags, providing a clean and polished look to your sleeper. Designed to fit most Peterbilt 387 and 587 sleepers, these covers are a functional and stylish addition to your truck.