Vibrant Merge Collectors make fabricating your Turbo Manifold much easier, less time consuming and more cost effective. Each collector is made from T34 Stainless Steel Schedule 1 pipes for optimum strength and durability Each Pipe is precision cut and assembled to create a proper merge for optimum scavenging of exhaust gases. Each collector is tack welded together to allow fabricator the ability to make any necessary angle adjustments before fully welding the manifold. Details: -------Designed for use with T2 Turbo Inlet Flanges Pipe O.D.: 48mm (1 7/8") Height: 115mm (4 1/2") Outlet: 58mm x 45mm (approx)