Squirrelly 3" Inch Stainless Steel Mandrel High Quality 90 Degree Bends Angles Turbo Exhaust System Fabrication Shops Piping We have many combinations of radius and tube diameter to suit professional exhaust builders, fab shops. 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. Features: 304 Stainless Steel 16 Gauge 90 Degree 3.00" Diameter Bend Radius = 4.50"