U-J Bend Specifications ———————-Tube Diameter 3.5″ O.D. U-Bend Centerline Radius 5.5″ Leg Length A 7″ Leg Length B 1″ Leg Length C 13″ Tube Thickness .65″ (1.65mm) Vibrant’s unique U-J Mandrel Bent Tubing combines a 18 degree bend and a 45 degree bend into one integral unit to give fabricators the ability to get up to 3 seperate bends and a substantial straight length from each piece. Ideal for building custom exhaust systems, headers, downpipes, intercooler piping, etc…. T34 Stainless Steel is a non-magnetic alloy that possesses very high chromium and nickel content, making it much more capable of withstanding acidic, high heat and corrosive conditions than regular (mild) steel