Universal 3" Aluminum 180 Degree U-Bend Exhaust Pipe (Chrome) Made of High Quality T6061 Aluminum Material Reinforced Strength Anodized Chrome-Coated for Highest Durability; Mandrel-Bent for Smoothest Air Flow 180 Degrees U-Bend, Easy Customization and Modification for Any Fitting Pipe Diameter: 3" Professional Installer is Highly Recommended (No Instruction Included)