Mode:RB26-TOP. Parts:Screw,nut,plane gasket,spring gasket M10x40,M8x35 all 4pcs. 6 holes,T4,13B by-pass white gasket all 1pc. Material:38,42x1.75 stainless steel,10mm,12mm thick low carbon steel flange plate with chroming and welding of reinforcing piece.