The Roadworks Peterbilt Shock/Air Bag Covers are a practical and stylish addition to your truck. Made of durable stainless steel, this kit includes an upper piece that conceals shocks and a lower piece that conceals air bags. With three 2-inch round and two 4-inch round light holes, you can customize your lighting options (lights not included). The covers use two factory bolts plus five additional screws to mount on the back of your sleeper and fit most Peterbilt 387 and 587 sleepers with 70-inch sleepers. The kit comes with a 1-year warranty from Roadworks. Call for more details.