1) SS304 stainless steel pipe and low carbon flange with TIG weld 2) Mirror polished 3) Precise cast flange (or CNC machined and laser cutting machined flange) 4) With gasket and bolt 5) High performance GSXR 1000 GSR-R Turbo Manifold T3/T4 Suzuki GSXR 1000 6) Accept customized orders to meet your specific requirements