Part Specifications -------------------Tube Diameter 4." O.D. Centerline Radius 6." Leg Length A 6" Leg Length B 6" Tube Thickness .65" (1.65mm) 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.