Diameter, 180 Degree, 16-Gauge, Stainless Steel, 3.50 in. Bend Radius - Vibrant Performance mandrel-bent round tubing offers perfect curves for your custom creation. These individual tubes are manufactured from stainless steel to withstand acidic, high-heat, and corrosive conditions. From incredibly tight U-bends to the slightest 15 degree bends, you can pick from 1.25 in. to 5 in. outer diameters to complete your project. Vibrant Performance mandrel-bent tubing is ideal for creating your custom exhaust, headers, downpipes, and intercooler pipes. And, with their choice of more sizes and more bend angles, you get more options. There's a good chance you can get exactly what you need, to complete your fabrication project perfectly