We have many combinations of radius and tube diameter to suit professional exhaust builders, fab shops and racers alike. We are continuously adding to our capabilities and inventory. We offer mandrel bent 304 stainless steel in various diameters and bend angles to help with your custom exhaust and turbo system fabrication. Item Details: 304 Stainless Steel 16 Gauge Raw Finish True Mandrel Bends 2 Pack of 15 Degree Bends 2.