2 x 3" Inch Copper Header Exhaust Collector Gaskets Flanges Universal 3 Bolt2 x 3" Inch Copper Header Exhaust Collector Gaskets Flanges Universal 3 Bolt FITS ALL 3" COLLECTORS WITH TRIANGLE (3 BOLT PATTERN) MADE OF SOLID COPPER . 041" THICK REUSABLE, NO SEALANT REQUIRED SEAL PERFECTLY EVERY TIME BY CREATING A TIGHT LEAK PROOF SEAL BY USING A CLAD O RING DESIGN THAT WILL LAST! BOLTS ARE NOT INCLUDED THESE GASKETS PROVIDE AN EXCELLENT SEAL & WE GUARANTEE IT! SOLD AS A PAIR (2 GASKETS)