For Volkswagen Jetta/Golf/Beetle 2" 4-Bolt Exhaust Catalytic Converter Repair Flex Pipe - 4th Gen Bora A4 Typ 1J Made of high quality T-304 stainless steel with flex TIG welded CNC machine flange for resistance against pressure and corrosion Flanged to bolt to factory manifold Slips over factory exhaust pipe to be clamped or welded to repair broken flex section 2"diameter 4-bolt inlet to 2" factory sized pipe outlet