Himni Racing GT15 Downpipe Turbine Exhaust Discharge Exit Mounting Flange Precision CNC Machined and Made In The USA Highest quality available with Excellent machined finish 1/2" Thick Resists Warping, Made of mild carbon steel DIY Use, Weld Flange Used To Custom Fabricate GT1548 Downpipes Highest quality available with Excellent machined finish Features a machined recessed lip for 3.00" Oval Tube to insure simplified proper tube/pipe alinement & eliminates the edge of the tube from the exhaust flow path