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