Genssi Muffler Tip Exhaust Tail Pipe Chrome Rolled Long Round ID: 4" OD: 8" Length: 18" Diesel Truck Large Muffler Tip for Trucks - Single Inlet: 4"; Single Outlet 8"; Overall Length: 18 Inches 100% Stainless Steel Can be welded on by any muffler shop or clamped down; Designed for large trucks, semi-trucks, buses etc Chrome finish Genssi premium muffler tips are the most durable quality muffler and exhaust systems for your vehicle!