The Roadworks 7 Inch Reduced To 5 90 Degree Long Drop Exhaust Elbow is a practical and reliable solution for your truck's exhaust system. Made of chrome plated steel, this exhaust elbow is built to last. With a 7 inch diameter reduced to 5 inches, it fits most Peterbilt 379 and 389 glider trucks. This product is sold individually, making it convenient for your specific needs. Improve your truck's performance and ensure a smooth exhaust flow with this high-quality exhaust elbow.